9512881157 has 8 divisors (see below), whose sum is σ = 10335303384. Its totient is φ = 8703410688.

The previous prime is 9512881153. The next prime is 9512881201. The reversal of 9512881157 is 7511882159.

It is a Cunningham number, because it is equal to 97534²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 167598916 + 9345282241 = 12946^2 + 96671^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9512881157 - 2² = 9512881153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9512881153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3236408 + ... + 3239345.

It is an arithmetic number, because the mean of its divisors is an integer number (1291912923).

Almost surely, 2^9512881157 is an apocalyptic number.

It is an amenable number.

9512881157 is a deficient number, since it is larger than the sum of its proper divisors (822422227).

9512881157 is a wasteful number, since it uses less digits than its factorization.

9512881157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6475879.

The product of its digits is 201600, while the sum is 47.

The square root of 9512881157 is about 97534.0000051264. Note that the first 5 decimals coincide. The cubic root of 9512881157 is about 2118.8685932963.

The spelling of 9512881157 in words is "nine billion, five hundred twelve million, eight hundred eighty-one thousand, one hundred fifty-seven".