2154261630 has 64 divisors (see below), whose sum is σ = 5224808448. Its totient is φ = 568431360.

The previous prime is 2154261617. The next prime is 2154261649. The reversal of 2154261630 is 361624512.

2154261630 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2830450 + ... + 2831210.

It is an arithmetic number, because the mean of its divisors is an integer number (81637632).

Almost surely, 2^2154261630 is an apocalyptic number.

2154261630 is an abundant number, since it is smaller than the sum of its proper divisors (3070546818).

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

2154261630 is a wasteful number, since it uses less digits than its factorization.

2154261630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2154261630 is about 46414.0240660083. The cubic root of 2154261630 is about 1291.5150818344.

The spelling of 2154261630 in words is "two billion, one hundred fifty-four million, two hundred sixty-one thousand, six hundred thirty".