6156990800 has 30 divisors (see below), whose sum is σ = 14792171358. Its totient is φ = 2462796160.

The previous prime is 6156990779. The next prime is 6156990839. The reversal of 6156990800 is 80996516.

It can be written as a sum of positive squares in 3 ways, for example, as 352988944 + 5804001856 = 18788^2 + 76184^2 .

It is a super-2 number, since 2×6156990800² = 75817071422569280000, 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 5 ways as a sum of consecutive naturals, for example, 7695839 + ... + 7696638.

Almost surely, 2^6156990800 is an apocalyptic number.

It is an amenable number.

6156990800 is an abundant number, since it is smaller than the sum of its proper divisors (8635180558).

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

6156990800 is a wasteful number, since it uses less digits than its factorization.

6156990800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15392495 (or 15392484 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 6156990800 is about 78466.4947605027. The cubic root of 6156990800 is about 1832.8327434003.

The spelling of 6156990800 in words is "six billion, one hundred fifty-six million, nine hundred ninety thousand, eight hundred".