6345991098 has 24 divisors (see below), whose sum is σ = 14558450868. Its totient is φ = 1990899072.

The previous prime is 6345991049. The next prime is 6345991109. The reversal of 6345991098 is 8901995436.

6345991098 is a `hidden beast` number, since 6 + 34 + 599 + 10 + 9 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5463722889 + 882268209 = 73917^2 + 29703^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10368961 + ... + 10369572.

Almost surely, 2^6345991098 is an apocalyptic number.

6345991098 is an abundant number, since it is smaller than the sum of its proper divisors (8212459770).

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

6345991098 is a wasteful number, since it uses less digits than its factorization.

6345991098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20738558 (or 20738555 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The square root of 6345991098 is about 79661.7291928816. The cubic root of 6345991098 is about 1851.3981248004.

The spelling of 6345991098 in words is "six billion, three hundred forty-five million, nine hundred ninety-one thousand, ninety-eight".