1172331616 has 36 divisors (see below), whose sum is σ = 2435920452. Its totient is φ = 555309504.

The previous prime is 1172331607. The next prime is 1172331617. The reversal of 1172331616 is 6161332711.

It is a super-2 number, since 2×1172331616² = 2748722835746342912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172331617) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39190 + ... + 62293.

It is an arithmetic number, because the mean of its divisors is an integer number (67664457).

Almost surely, 2^1172331616 is an apocalyptic number.

1172331616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1172331616 is an abundant number, since it is smaller than the sum of its proper divisors (1263588836).

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

1172331616 is a wasteful number, since it uses less digits than its factorization.

1172331616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101531 (or 101504 counting only the distinct ones).

The product of its digits is 4536, while the sum is 31.

The square root of 1172331616 is about 34239.3284980883. The cubic root of 1172331616 is about 1054.4277471258.

The spelling of 1172331616 in words is "one billion, one hundred seventy-two million, three hundred thirty-one thousand, six hundred sixteen".