1191974464 has 28 divisors (see below), whose sum is σ = 2377732608. Its totient is φ = 592860800.

The previous prime is 1191974461. The next prime is 1191974477. The reversal of 1191974464 is 4644791911.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1191974461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36532 + ... + 60979.

Almost surely, 2^1191974464 is an apocalyptic number.

It is an amenable number.

1191974464 is a deficient number, since it is larger than the sum of its proper divisors (1185758144).

1191974464 is an equidigital number, since it uses as much as digits as its factorization.

1191974464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97714 (or 97704 counting only the distinct ones).

The product of its digits is 217728, while the sum is 46.

The square root of 1191974464 is about 34524.9831860929. The cubic root of 1191974464 is about 1060.2842669421.

The spelling of 1191974464 in words is "one billion, one hundred ninety-one million, nine hundred seventy-four thousand, four hundred sixty-four".