1992511164 has 24 divisors (see below), whose sum is σ = 5313363328. Its totient is φ = 569288880.

The previous prime is 1992511141. The next prime is 1992511187. The reversal of 1992511164 is 4611152991.

It is an interprime number because it is at equal distance from previous prime (1992511141) and next prime (1992511187).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent 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, 11860102 + ... + 11860269.

Almost surely, 2^1992511164 is an apocalyptic number.

1992511164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1992511164 is an abundant number, since it is smaller than the sum of its proper divisors (3320852164).

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

1992511164 is a wasteful number, since it uses less digits than its factorization.

1992511164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23720385 (or 23720383 counting only the distinct ones).

The product of its digits is 19440, while the sum is 39.

The square root of 1992511164 is about 44637.5532931634. The cubic root of 1992511164 is about 1258.3465260121.

The spelling of 1992511164 in words is "one billion, nine hundred ninety-two million, five hundred eleven thousand, one hundred sixty-four".