2564164923 has 8 divisors (see below), whose sum is σ = 3425425728. Its totient is φ = 1706173704.

The previous prime is 2564164909. The next prime is 2564164937. The reversal of 2564164923 is 3294614652.

2564164923 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 an interprime number because it is at equal distance from previous prime (2564164909) and next prime (2564164937).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2564164923 - 2¹³ = 2564156731 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2564164903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 815565 + ... + 818702.

It is an arithmetic number, because the mean of its divisors is an integer number (428178216).

Almost surely, 2^2564164923 is an apocalyptic number.

2564164923 is a deficient number, since it is larger than the sum of its proper divisors (861260805).

2564164923 is a wasteful number, since it uses less digits than its factorization.

2564164923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634793.

The product of its digits is 311040, while the sum is 42.

The square root of 2564164923 is about 50637.5840952153. The cubic root of 2564164923 is about 1368.7222218586.

The spelling of 2564164923 in words is "two billion, five hundred sixty-four million, one hundred sixty-four thousand, nine hundred twenty-three".