265198149 has 12 divisors (see below), whose sum is σ = 395421312. Its totient is φ = 171095400.

The previous prime is 265198139. The next prime is 265198163. The reversal of 265198149 is 941891562.

It is not a de Polignac number, because 265198149 - 2⁸ = 265197893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265198139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 474987 + ... + 475544.

It is an arithmetic number, because the mean of its divisors is an integer number (32951776).

Almost surely, 2^265198149 is an apocalyptic number.

It is an amenable number.

265198149 is a deficient number, since it is larger than the sum of its proper divisors (130223163).

265198149 is a wasteful number, since it uses less digits than its factorization.

265198149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950568 (or 950565 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 265198149 is about 16284.9055569874. The cubic root of 265198149 is about 642.4758823531.

The spelling of 265198149 in words is "two hundred sixty-five million, one hundred ninety-eight thousand, one hundred forty-nine".