264210493 has 2 divisors, whose sum is σ = 264210494. Its totient is φ = 264210492.

The previous prime is 264210467. The next prime is 264210539. The reversal of 264210493 is 394012462.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 256576324 + 7634169 = 16018^2 + 2763^2 .

It is a cyclic number.

It is not a de Polignac number, because 264210493 - 2²⁵ = 230656061 is a prime.

It is a super-2 number, since 2×264210493² = 139614369222606098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264217493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132105246 + 132105247.

It is an arithmetic number, because the mean of its divisors is an integer number (132105247).

Almost surely, 2^264210493 is an apocalyptic number.

It is an amenable number.

264210493 is a deficient number, since it is larger than the sum of its proper divisors (1).

264210493 is an equidigital number, since it uses as much as digits as its factorization.

264210493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 264210493 is about 16254.5529929309. The cubic root of 264210493 is about 641.6773165452.

The spelling of 264210493 in words is "two hundred sixty-four million, two hundred ten thousand, four hundred ninety-three".