2154330164 has 24 divisors (see below), whose sum is σ = 4400336640. Its totient is φ = 903639456.

The previous prime is 2154330149. The next prime is 2154330187. The reversal of 2154330164 is 4610334512.

It is a super-2 number, since 2×2154330164² = 9282276911040533792, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 817199 + ... + 819830.

It is an arithmetic number, because the mean of its divisors is an integer number (183347360).

Almost surely, 2^2154330164 is an apocalyptic number.

It is an amenable number.

2154330164 is an abundant number, since it is smaller than the sum of its proper divisors (2246006476).

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

2154330164 is a wasteful number, since it uses less digits than its factorization.

2154330164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637087 (or 1637085 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 2154330164 is about 46414.7623499248. The cubic root of 2154330164 is about 1291.5287774405.

Adding to 2154330164 its reverse (4610334512), we get a palindrome (6764664676).

The spelling of 2154330164 in words is "two billion, one hundred fifty-four million, three hundred thirty thousand, one hundred sixty-four".