264738531 has 8 divisors (see below), whose sum is σ = 356412160. Its totient is φ = 174778632.

The previous prime is 264738503. The next prime is 264738541. The reversal of 264738531 is 135837462.

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

It is not a de Polignac number, because 264738531 - 2¹⁹ = 264214243 is a prime.

It is a super-2 number, since 2×264738531² = 140172979592075922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 264738531.

It is not an unprimeable number, because it can be changed into a prime (264738541) 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, 428071 + ... + 428688.

It is an arithmetic number, because the mean of its divisors is an integer number (44551520).

Almost surely, 2^264738531 is an apocalyptic number.

264738531 is a deficient number, since it is larger than the sum of its proper divisors (91673629).

264738531 is a wasteful number, since it uses less digits than its factorization.

264738531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856865.

The product of its digits is 120960, while the sum is 39.

The square root of 264738531 is about 16270.7876576397. The cubic root of 264738531 is about 642.1045069145.

The spelling of 264738531 in words is "two hundred sixty-four million, seven hundred thirty-eight thousand, five hundred thirty-one".