1992436902 has 96 divisors (see below), whose sum is σ = 4584644064. Its totient is φ = 624499200.

The previous prime is 1992436891. The next prime is 1992436913. The reversal of 1992436902 is 2096342991.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1992436891) and next prime (1992436913).

It is a Smith number, since the sum of its digits (45) 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 47 ways as a sum of consecutive naturals, for example, 3576808 + ... + 3577364.

It is an arithmetic number, because the mean of its divisors is an integer number (47756709).

Almost surely, 2^1992436902 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1992436902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2292322032).

1992436902 is an abundant number, since it is smaller than the sum of its proper divisors (2592207162).

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

1992436902 is a wasteful number, since it uses less digits than its factorization.

1992436902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774 (or 771 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 1992436902 is about 44636.7214521855. The cubic root of 1992436902 is about 1258.3308927261.

The spelling of 1992436902 in words is "one billion, nine hundred ninety-two million, four hundred thirty-six thousand, nine hundred two".