2154604490 has 16 divisors (see below), whose sum is σ = 3931416648. Its totient is φ = 850035456.

The previous prime is 2154604457. The next prime is 2154604493. The reversal of 2154604490 is 944064512.

It can be written as a sum of positive squares in 4 ways, for example, as 2062885561 + 91718929 = 45419^2 + 9577^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2154604490.

It is not an unprimeable number, because it can be changed into a prime (2154604493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1475027 + ... + 1476486.

Almost surely, 2^2154604490 is an apocalyptic number.

2154604490 is a deficient number, since it is larger than the sum of its proper divisors (1776812158).

2154604490 is a wasteful number, since it uses less digits than its factorization.

2154604490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2951593.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 2154604490 is about 46417.7174147976. The cubic root of 2154604490 is about 1291.5835949257.

The spelling of 2154604490 in words is "two billion, one hundred fifty-four million, six hundred four thousand, four hundred ninety".