264193631 has 4 divisors (see below), whose sum is σ = 284516232. Its totient is φ = 243871032.

The previous prime is 264193609. The next prime is 264193649. The reversal of 264193631 is 136391462.

It is a happy number.

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 264193631 - 2¹⁴ = 264177247 is a prime.

It is a super-2 number, since 2×264193631² = 139596549321928322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 264193591 and 264193600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264193331) 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, 10161281 + ... + 10161306.

It is an arithmetic number, because the mean of its divisors is an integer number (71129058).

Almost surely, 2^264193631 is an apocalyptic number.

264193631 is a deficient number, since it is larger than the sum of its proper divisors (20322601).

264193631 is a wasteful number, since it uses less digits than its factorization.

264193631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20322600.

The product of its digits is 23328, while the sum is 35.

The square root of 264193631 is about 16254.0342992132. The cubic root of 264193631 is about 641.6636655694.

The spelling of 264193631 in words is "two hundred sixty-four million, one hundred ninety-three thousand, six hundred thirty-one".