2154923364 has 72 divisors (see below), whose sum is σ = 5676329344. Its totient is φ = 635342400.

The previous prime is 2154923299. The next prime is 2154923413. The reversal of 2154923364 is 4633294512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33669 + ... + 73779.

Almost surely, 2^2154923364 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2154923364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2838164672).

2154923364 is an abundant number, since it is smaller than the sum of its proper divisors (3521405980).

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

2154923364 is a wasteful number, since it uses less digits than its factorization.

2154923364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40177 (or 40164 counting only the distinct ones).

The product of its digits is 155520, while the sum is 39.

The square root of 2154923364 is about 46421.1521184040. The cubic root of 2154923364 is about 1291.6473084152.

The spelling of 2154923364 in words is "two billion, one hundred fifty-four million, nine hundred twenty-three thousand, three hundred sixty-four".