902138193 has 12 divisors (see below), whose sum is σ = 1421551248. Its totient is φ = 546750360.

The previous prime is 902138189. The next prime is 902138197. The reversal of 902138193 is 391831209.

It is an interprime number because it is at equal distance from previous prime (902138189) and next prime (902138197).

It is not a de Polignac number, because 902138193 - 2² = 902138189 is a prime.

It is not an unprimeable number, because it can be changed into a prime (902138197) 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, 4556155 + ... + 4556352.

It is an arithmetic number, because the mean of its divisors is an integer number (118462604).

Almost surely, 2^902138193 is an apocalyptic number.

It is an amenable number.

902138193 is a deficient number, since it is larger than the sum of its proper divisors (519413055).

902138193 is a wasteful number, since it uses less digits than its factorization.

902138193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9112524 (or 9112521 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 902138193 is about 30035.6154090440. The cubic root of 902138193 is about 966.2533734758.

The spelling of 902138193 in words is "nine hundred two million, one hundred thirty-eight thousand, one hundred ninety-three".