1534122640 has 40 divisors (see below), whose sum is σ = 3576076920. Its totient is φ = 612059136.

The previous prime is 1534122617. The next prime is 1534122647. The reversal of 1534122640 is 462214351.

1534122640 = T₁₅₁ + T₁₅₂ + ... + T₂₀₉₅.

It can be written as a sum of positive squares in 4 ways, for example, as 25887744 + 1508234896 = 5088^2 + 38836^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 1534122599 and 1534122608.

It is not an unprimeable number, because it can be changed into a prime (1534122647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6472 + ... + 55768.

It is an arithmetic number, because the mean of its divisors is an integer number (89401923).

Almost surely, 2^1534122640 is an apocalyptic number.

1534122640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1534122640 is an abundant number, since it is smaller than the sum of its proper divisors (2041954280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1534122640 is a wasteful number, since it uses less digits than its factorization.

1534122640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49699 (or 49693 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1534122640 is about 39167.8776550377. The cubic root of 1534122640 is about 1153.3293913981.

Adding to 1534122640 its reverse (462214351), we get a palindrome (1996336991).

The spelling of 1534122640 in words is "one billion, five hundred thirty-four million, one hundred twenty-two thousand, six hundred forty".