648430942 has 4 divisors (see below), whose sum is σ = 972646416. Its totient is φ = 324215470.

The previous prime is 648430933. The next prime is 648430961. The reversal of 648430942 is 249034846.

648430942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 648430895 and 648430904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162107734 + ... + 162107737.

It is an arithmetic number, because the mean of its divisors is an integer number (243161604).

Almost surely, 2^648430942 is an apocalyptic number.

648430942 is a deficient number, since it is larger than the sum of its proper divisors (324215474).

648430942 is a wasteful number, since it uses less digits than its factorization.

648430942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324215473.

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 648430942 is about 25464.3072161801. The cubic root of 648430942 is about 865.5415286618.

The spelling of 648430942 in words is "six hundred forty-eight million, four hundred thirty thousand, nine hundred forty-two".