1992986790 has 64 divisors (see below), whose sum is σ = 4949683200. Its totient is φ = 513241344.

The previous prime is 1992986767. The next prime is 1992986803. The reversal of 1992986790 is 976892991.

It is a happy number.

It is a super-2 number, since 2×1992986790² = 7943992690229008200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106131 + ... + 123489.

It is an arithmetic number, because the mean of its divisors is an integer number (77338800).

Almost surely, 2^1992986790 is an apocalyptic number.

1992986790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1992986790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2474841600).

1992986790 is an abundant number, since it is smaller than the sum of its proper divisors (2956696410).

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

1992986790 is a wasteful number, since it uses less digits than its factorization.

1992986790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17501.

The product of its (nonzero) digits is 4408992, while the sum is 60.

The square root of 1992986790 is about 44642.8806194224. The cubic root of 1992986790 is about 1258.4466433447.

The spelling of 1992986790 in words is "one billion, nine hundred ninety-two million, nine hundred eighty-six thousand, seven hundred ninety".