7811648923 has 8 divisors (see below), whose sum is σ = 8855310800. Its totient is φ = 6831239328.

The previous prime is 7811648909. The next prime is 7811649047. The reversal of 7811648923 is 3298461187.

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

It is not a de Polignac number, because 7811648923 - 2¹⁷ = 7811517851 is a prime.

It is a super-2 number, since 2×7811648923² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7811643923) 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, 15812808 + ... + 15813301.

It is an arithmetic number, because the mean of its divisors is an integer number (1106913850).

Almost surely, 2^7811648923 is an apocalyptic number.

7811648923 is a deficient number, since it is larger than the sum of its proper divisors (1043661877).

7811648923 is a wasteful number, since it uses less digits than its factorization.

7811648923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31626141.

The product of its digits is 580608, while the sum is 49.

The square root of 7811648923 is about 88383.5330986491. The cubic root of 7811648923 is about 1984.1792589823.

The spelling of 7811648923 in words is "seven billion, eight hundred eleven million, six hundred forty-eight thousand, nine hundred twenty-three".