1992865898 has 8 divisors (see below), whose sum is σ = 2995756608. Its totient is φ = 994280364.

The previous prime is 1992865883. The next prime is 1992865921. The reversal of 1992865898 is 8985682991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1992865898² = 7943028974822692808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1075136 + ... + 1076987.

It is an arithmetic number, because the mean of its divisors is an integer number (374469576).

Almost surely, 2^1992865898 is an apocalyptic number.

1992865898 is a deficient number, since it is larger than the sum of its proper divisors (1002890710).

1992865898 is a wasteful number, since it uses less digits than its factorization.

1992865898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152588.

The product of its digits is 22394880, while the sum is 65.

The square root of 1992865898 is about 44641.5266092010. The cubic root of 1992865898 is about 1258.4211975818.

The spelling of 1992865898 in words is "one billion, nine hundred ninety-two million, eight hundred sixty-five thousand, eight hundred ninety-eight".