197791512 has 16 divisors (see below), whose sum is σ = 494478840. Its totient is φ = 65930496.

The previous prime is 197791511. The next prime is 197791519. The reversal of 197791512 is 215197791.

It is a super-2 number, since 2×197791512² = 78242964438492288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197791511) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4120633 + ... + 4120680.

Almost surely, 2^197791512 is an apocalyptic number.

197791512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

197791512 is an abundant number, since it is smaller than the sum of its proper divisors (296687328).

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

197791512 is a wasteful number, since it uses less digits than its factorization.

197791512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8241322 (or 8241318 counting only the distinct ones).

The product of its digits is 39690, while the sum is 42.

The square root of 197791512 is about 14063.8370297725. The cubic root of 197791512 is about 582.6430228356.

The spelling of 197791512 in words is "one hundred ninety-seven million, seven hundred ninety-one thousand, five hundred twelve".