961138593 has 6 divisors (see below), whose sum is σ = 1388311314. Its totient is φ = 640759056.

The previous prime is 961138553. The next prime is 961138613. The reversal of 961138593 is 395831169.

It can be written as a sum of positive squares in only one way, i.e., 957778704 + 3359889 = 30948^2 + 1833^2 .

It is not a de Polignac number, because 961138593 - 2²⁰ = 960090017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (961138553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53396580 + ... + 53396597.

It is an arithmetic number, because the mean of its divisors is an integer number (231385219).

Almost surely, 2^961138593 is an apocalyptic number.

It is an amenable number.

961138593 is a deficient number, since it is larger than the sum of its proper divisors (427172721).

961138593 is a wasteful number, since it uses less digits than its factorization.

961138593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106793183 (or 106793180 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 961138593 is about 31002.2352903787. The cubic root of 961138593 is about 986.8746772881.

The spelling of 961138593 in words is "nine hundred sixty-one million, one hundred thirty-eight thousand, five hundred ninety-three".