265053638 has 4 divisors (see below), whose sum is σ = 397580460. Its totient is φ = 132526818.

The previous prime is 265053631. The next prime is 265053641. The reversal of 265053638 is 836350562.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 836350562 = 2 ⋅418175281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265053631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66263408 + ... + 66263411.

It is an arithmetic number, because the mean of its divisors is an integer number (99395115).

Almost surely, 2^265053638 is an apocalyptic number.

265053638 is a deficient number, since it is larger than the sum of its proper divisors (132526822).

265053638 is a wasteful number, since it uses less digits than its factorization.

265053638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132526821.

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 265053638 is about 16280.4679908165. The cubic root of 265053638 is about 642.3591624565.

The spelling of 265053638 in words is "two hundred sixty-five million, fifty-three thousand, six hundred thirty-eight".