2154164590 has 32 divisors (see below), whose sum is σ = 4052768256. Its totient is φ = 822840480.

The previous prime is 2154164569. The next prime is 2154164603. The reversal of 2154164590 is 954614512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137709 + ... + 152551.

It is an arithmetic number, because the mean of its divisors is an integer number (126649008).

Almost surely, 2^2154164590 is an apocalyptic number.

2154164590 is a deficient number, since it is larger than the sum of its proper divisors (1898603666).

2154164590 is a wasteful number, since it uses less digits than its factorization.

2154164590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15504.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 2154164590 is about 46412.9786805372. The cubic root of 2154164590 is about 1291.4956891875.

The spelling of 2154164590 in words is "two billion, one hundred fifty-four million, one hundred sixty-four thousand, five hundred ninety".