902132391 has 16 divisors (see below), whose sum is σ = 1218002400. Its totient is φ = 593860608.

The previous prime is 902132383. The next prime is 902132393. The reversal of 902132391 is 193231209.

It is a happy number.

It is not a de Polignac number, because 902132391 - 2³ = 902132383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (902132393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246225 + ... + 249861.

It is an arithmetic number, because the mean of its divisors is an integer number (76125150).

Almost surely, 2^902132391 is an apocalyptic number.

902132391 is a deficient number, since it is larger than the sum of its proper divisors (315870009).

902132391 is a wasteful number, since it uses less digits than its factorization.

902132391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4658.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 902132391 is about 30035.5188235529. The cubic root of 902132391 is about 966.2513020215.

The spelling of 902132391 in words is "nine hundred two million, one hundred thirty-two thousand, three hundred ninety-one".