264137489 has 24 divisors (see below), whose sum is σ = 336194208. Its totient is φ = 205208640.

The previous prime is 264137477. The next prime is 264137569. The reversal of 264137489 is 984731462.

It is not a de Polignac number, because 264137489 - 2⁴ = 264137473 is a prime.

It is a super-2 number, since 2×264137489² = 139537226190450242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264137459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 281429 + ... + 282365.

It is an arithmetic number, because the mean of its divisors is an integer number (14008092).

Almost surely, 2^264137489 is an apocalyptic number.

It is an amenable number.

264137489 is a deficient number, since it is larger than the sum of its proper divisors (72056719).

264137489 is a wasteful number, since it uses less digits than its factorization.

264137489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485 (or 1478 counting only the distinct ones).

The product of its digits is 290304, while the sum is 44.

The square root of 264137489 is about 16252.3071900577. The cubic root of 264137489 is about 641.6182104823.

The spelling of 264137489 in words is "two hundred sixty-four million, one hundred thirty-seven thousand, four hundred eighty-nine".