1992988837 has 16 divisors (see below), whose sum is σ = 2382739200. Its totient is φ = 1630823040.

The previous prime is 1992988813. The next prime is 1992988849. The reversal of 1992988837 is 7388892991.

It is not a de Polignac number, because 1992988837 - 2²³ = 1984600229 is a prime.

It is a super-2 number, since 2×1992988837² = 7944009008813225138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992988237) 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, 37089 + ... + 73222.

It is an arithmetic number, because the mean of its divisors is an integer number (148921200).

Almost surely, 2^1992988837 is an apocalyptic number.

It is an amenable number.

1992988837 is a deficient number, since it is larger than the sum of its proper divisors (389750363).

1992988837 is a wasteful number, since it uses less digits than its factorization.

1992988837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110436.

The product of its digits is 15676416, while the sum is 64.

The square root of 1992988837 is about 44642.9035458045. The cubic root of 1992988837 is about 1258.4470741954.

The spelling of 1992988837 in words is "one billion, nine hundred ninety-two million, nine hundred eighty-eight thousand, eight hundred thirty-seven".