1197644772 has 24 divisors (see below), whose sum is σ = 2859494176. Its totient is φ = 389930688.

The previous prime is 1197644737. The next prime is 1197644783. The reversal of 1197644772 is 2774467911.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1159993 + ... + 1161024.

Almost surely, 2^1197644772 is an apocalyptic number.

1197644772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1197644772 is an abundant number, since it is smaller than the sum of its proper divisors (1661849404).

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

1197644772 is a wasteful number, since it uses less digits than its factorization.

1197644772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2321067 (or 2321065 counting only the distinct ones).

The product of its digits is 592704, while the sum is 48.

The square root of 1197644772 is about 34607.0046666856. The cubic root of 1197644772 is about 1061.9628907345.

The spelling of 1197644772 in words is "one billion, one hundred ninety-seven million, six hundred forty-four thousand, seven hundred seventy-two".