264537738 has 20 divisors (see below), whose sum is σ = 592760850. Its totient is φ = 88179192.

The previous prime is 264537737. The next prime is 264537803. The reversal of 264537738 is 837735462.

It can be written as a sum of positive squares in only one way, i.e., 179104689 + 85433049 = 13383^2 + 9243^2 .

It is a junction number, because it is equal to n+sod(n) for n = 264537693 and 264537702.

It is not an unprimeable number, because it can be changed into a prime (264537733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 816313 + ... + 816636.

Almost surely, 2^264537738 is an apocalyptic number.

264537738 is an abundant number, since it is smaller than the sum of its proper divisors (328223112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

264537738 is a wasteful number, since it uses less digits than its factorization.

264537738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632963 (or 1632954 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The square root of 264537738 is about 16264.6161344189. The cubic root of 264537738 is about 641.9421294679.

It can be divided in two parts, 26453 and 7738, that added together give a triangular number (34191 = T₂₆₁).

The spelling of 264537738 in words is "two hundred sixty-four million, five hundred thirty-seven thousand, seven hundred thirty-eight".