2154607868 has 24 divisors (see below), whose sum is σ = 4315057152. Its totient is φ = 922151664.

The previous prime is 2154607841. The next prime is 2154607877. The reversal of 2154607868 is 8687064512.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

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, 30980 + ... + 72587.

It is an arithmetic number, because the mean of its divisors is an integer number (179794048).

Almost surely, 2^2154607868 is an apocalyptic number.

2154607868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2154607868 is an abundant number, since it is smaller than the sum of its proper divisors (2160449284).

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

2154607868 is a wasteful number, since it uses less digits than its factorization.

2154607868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104321 (or 104319 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 2154607868 is about 46417.7538017513. The cubic root of 2154607868 is about 1291.5842699092.

The spelling of 2154607868 in words is "two billion, one hundred fifty-four million, six hundred seven thousand, eight hundred sixty-eight".