265138893 has 8 divisors (see below), whose sum is σ = 392798400. Its totient is φ = 176759244.

The previous prime is 265138889. The next prime is 265138957. The reversal of 265138893 is 398831562.

It is a happy number.

265138893 is a `hidden beast` number, since 265 + 1 + 388 + 9 + 3 = 666.

It is not a de Polignac number, because 265138893 - 2² = 265138889 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265138813) 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, 4909953 + ... + 4910006.

It is an arithmetic number, because the mean of its divisors is an integer number (49099800).

Almost surely, 2^265138893 is an apocalyptic number.

It is an amenable number.

265138893 is a deficient number, since it is larger than the sum of its proper divisors (127659507).

265138893 is an equidigital number, since it uses as much as digits as its factorization.

265138893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9819968 (or 9819962 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 265138893 is about 16283.0861018420. The cubic root of 265138893 is about 642.4280270835.

The spelling of 265138893 in words is "two hundred sixty-five million, one hundred thirty-eight thousand, eight hundred ninety-three".