1171390372 has 24 divisors (see below), whose sum is σ = 2183854176. Its totient is φ = 547855488.

The previous prime is 1171390361. The next prime is 1171390379. The reversal of 1171390372 is 2730931711.

It is a super-2 number, since 2×1171390372² = 2744310807228596768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (1171390379) 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, 41758 + ... + 63925.

It is an arithmetic number, because the mean of its divisors is an integer number (90993924).

Almost surely, 2^1171390372 is an apocalyptic number.

It is an amenable number.

1171390372 is a deficient number, since it is larger than the sum of its proper divisors (1012463804).

1171390372 is a wasteful number, since it uses less digits than its factorization.

1171390372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105867 (or 105865 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 1171390372 is about 34225.5806670975. The cubic root of 1171390372 is about 1054.1454778690.

The spelling of 1171390372 in words is "one billion, one hundred seventy-one million, three hundred ninety thousand, three hundred seventy-two".