9131641620 has 24 divisors (see below), whose sum is σ = 25568596704. Its totient is φ = 2435104416.

The previous prime is 9131641577. The next prime is 9131641691. The reversal of 9131641620 is 261461319.

It is a super-2 number, since 2×9131641620² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76096954 + ... + 76097073.

It is an arithmetic number, because the mean of its divisors is an integer number (1065358196).

Almost surely, 2^9131641620 is an apocalyptic number.

It is an amenable number.

9131641620 is an abundant number, since it is smaller than the sum of its proper divisors (16436955084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9131641620 is a wasteful number, since it uses less digits than its factorization.

9131641620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152194039 (or 152194037 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 9131641620 is about 95559.6233772402. The cubic root of 9131641620 is about 2090.1764630504.

The spelling of 9131641620 in words is "nine billion, one hundred thirty-one million, six hundred forty-one thousand, six hundred twenty".