264157199 has 4 divisors (see below), whose sum is σ = 266721936. Its totient is φ = 261592464.

The previous prime is 264157147. The next prime is 264157207. The reversal of 264157199 is 991751462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 264157199 - 2²⁰ = 263108623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264157109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1282214 + ... + 1282419.

It is an arithmetic number, because the mean of its divisors is an integer number (66680484).

Almost surely, 2^264157199 is an apocalyptic number.

264157199 is a deficient number, since it is larger than the sum of its proper divisors (2564737).

264157199 is a wasteful number, since it uses less digits than its factorization.

264157199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564736.

The product of its digits is 136080, while the sum is 44.

The square root of 264157199 is about 16252.9135541908. The cubic root of 264157199 is about 641.6341693180.

The spelling of 264157199 in words is "two hundred sixty-four million, one hundred fifty-seven thousand, one hundred ninety-nine".