4320637998 has 16 divisors (see below), whose sum is σ = 9016983936. Its totient is φ = 1377594680.

The previous prime is 4320637973. The next prime is 4320638011. The reversal of 4320637998 is 8997360234.

It is a super-2 number, since 2×4320637998² = 37335825419522896008, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4320637998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15654348 + ... + 15654623.

It is an arithmetic number, because the mean of its divisors is an integer number (563561496).

Almost surely, 2^4320637998 is an apocalyptic number.

4320637998 is an abundant number, since it is smaller than the sum of its proper divisors (4696345938).

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

4320637998 is a wasteful number, since it uses less digits than its factorization.

4320637998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31308999.

The product of its (nonzero) digits is 1959552, while the sum is 51.

The square root of 4320637998 is about 65731.5601366649. The cubic root of 4320637998 is about 1628.7307416127.

The spelling of 4320637998 in words is "four billion, three hundred twenty million, six hundred thirty-seven thousand, nine hundred ninety-eight".