1401156616 has 16 divisors (see below), whose sum is σ = 2628341100. Its totient is φ = 700265664.

The previous prime is 1401156613. The next prime is 1401156649. The reversal of 1401156616 is 6166511041.

It can be written as a sum of positive squares in 2 ways, for example, as 1396516900 + 4639716 = 37370^2 + 2154^2 .

It is not an unprimeable number, because it can be changed into a prime (1401156611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19455 + ... + 56398.

Almost surely, 2^1401156616 is an apocalyptic number.

It is an amenable number.

1401156616 is a deficient number, since it is larger than the sum of its proper divisors (1227184484).

1401156616 is a wasteful number, since it uses less digits than its factorization.

1401156616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78168 (or 78164 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1401156616 is about 37432.0266082402. The cubic root of 1401156616 is about 1118.9969271705.

Adding to 1401156616 its reverse (6166511041), we get a palindrome (7567667657).

The spelling of 1401156616 in words is "one billion, four hundred one million, one hundred fifty-six thousand, six hundred sixteen".