1540633133 has 16 divisors (see below), whose sum is σ = 1714417152. Its totient is φ = 1374840000.

The previous prime is 1540633123. The next prime is 1540633147. The reversal of 1540633133 is 3313360451.

It is a cyclic number.

It is not a de Polignac number, because 1540633133 - 2⁴ = 1540633117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1540633096 and 1540633105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540633123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 765098 + ... + 767108.

It is an arithmetic number, because the mean of its divisors is an integer number (107151072).

Almost surely, 2^1540633133 is an apocalyptic number.

1540633133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1540633133 is a deficient number, since it is larger than the sum of its proper divisors (173784019).

1540633133 is a wasteful number, since it uses less digits than its factorization.

1540633133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3956.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 1540633133 is about 39250.8997731262. The cubic root of 1540633133 is about 1154.9585844985.

Adding to 1540633133 its reverse (3313360451), we get a palindrome (4853993584).

The spelling of 1540633133 in words is "one billion, five hundred forty million, six hundred thirty-three thousand, one hundred thirty-three".