2120153998 has 16 divisors (see below), whose sum is σ = 3200534064. Its totient is φ = 1053319680.

The previous prime is 2120153989. The next prime is 2120154019. The reversal of 2120153998 is 8993510212.

It is a self number, because there is not a number n which added to its sum of digits gives 2120153998.

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, 674286 + ... + 677422.

It is an arithmetic number, because the mean of its divisors is an integer number (200033379).

Almost surely, 2^2120153998 is an apocalyptic number.

2120153998 is a deficient number, since it is larger than the sum of its proper divisors (1080380066).

2120153998 is a wasteful number, since it uses less digits than its factorization.

2120153998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5187.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 2120153998 is about 46045.1300139331. The cubic root of 2120153998 is about 1284.6627624163.

The spelling of 2120153998 in words is "two billion, one hundred twenty million, one hundred fifty-three thousand, nine hundred ninety-eight".