1197390651 has 16 divisors (see below), whose sum is σ = 1607282688. Its totient is φ = 792892800.

The previous prime is 1197390643. The next prime is 1197390661. The reversal of 1197390651 is 1560937911.

It is not a de Polignac number, because 1197390651 - 2³ = 1197390643 is a prime.

It is a super-2 number, since 2×1197390651² = 2867488742204407602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1197390611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 553011 + ... + 555171.

It is an arithmetic number, because the mean of its divisors is an integer number (100455168).

Almost surely, 2^1197390651 is an apocalyptic number.

1197390651 is a deficient number, since it is larger than the sum of its proper divisors (409892037).

1197390651 is a wasteful number, since it uses less digits than its factorization.

1197390651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3322.

The product of its (nonzero) digits is 51030, while the sum is 42.

The square root of 1197390651 is about 34603.3329464085. The cubic root of 1197390651 is about 1061.8877749273.

The spelling of 1197390651 in words is "one billion, one hundred ninety-seven million, three hundred ninety thousand, six hundred fifty-one".