1172364816 has 80 divisors (see below), whose sum is σ = 3508755584. Its totient is φ = 330365952.

The previous prime is 1172364799. The next prime is 1172364821. The reversal of 1172364816 is 6184632711.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 630 + ... + 48426.

Almost surely, 2^1172364816 is an apocalyptic number.

1172364816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1172364816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1754377792).

1172364816 is an abundant number, since it is smaller than the sum of its proper divisors (2336390768).

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

1172364816 is a wasteful number, since it uses less digits than its factorization.

1172364816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47888 (or 47882 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 1172364816 is about 34239.8133172481. The cubic root of 1172364816 is about 1054.4377007005.

The spelling of 1172364816 in words is "one billion, one hundred seventy-two million, three hundred sixty-four thousand, eight hundred sixteen".