975166813 has 4 divisors (see below), whose sum is σ = 977977440. Its totient is φ = 972356188.

The previous prime is 975166781. The next prime is 975166823. The reversal of 975166813 is 318661579.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 975166813 - 2⁵ = 975166781 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 (975166823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1404793 + ... + 1405486.

It is an arithmetic number, because the mean of its divisors is an integer number (244494360).

Almost surely, 2^975166813 is an apocalyptic number.

It is an amenable number.

975166813 is a deficient number, since it is larger than the sum of its proper divisors (2810627).

975166813 is a wasteful number, since it uses less digits than its factorization.

975166813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2810626.

The product of its digits is 272160, while the sum is 46.

The square root of 975166813 is about 31227.6610235221. The cubic root of 975166813 is about 991.6527889340.

It can be divided in two parts, 97516 and 6813, that added together give a square (104329 = 323²).

The spelling of 975166813 in words is "nine hundred seventy-five million, one hundred sixty-six thousand, eight hundred thirteen".