7923148644 has 12 divisors (see below), whose sum is σ = 18487346864. Its totient is φ = 2641049544.

The previous prime is 7923148643. The next prime is 7923148679. The reversal of 7923148644 is 4468413297.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 7923148593 and 7923148602.

It is not an unprimeable number, because it can be changed into a prime (7923148643) 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, 330131182 + ... + 330131205.

Almost surely, 2^7923148644 is an apocalyptic number.

It is an amenable number.

7923148644 is an abundant number, since it is smaller than the sum of its proper divisors (10564198220).

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

7923148644 is a wasteful number, since it uses less digits than its factorization.

7923148644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660262394 (or 660262392 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 48.

The square root of 7923148644 is about 89012.0702152242. The cubic root of 7923148644 is about 1993.5751027825.

The spelling of 7923148644 in words is "seven billion, nine hundred twenty-three million, one hundred forty-eight thousand, six hundred forty-four".