650391954 has 32 divisors (see below), whose sum is σ = 1311494976. Its totient is φ = 215019840.

The previous prime is 650391949. The next prime is 650392007. The reversal of 650391954 is 459193056.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 496969 + ... + 498275.

It is an arithmetic number, because the mean of its divisors is an integer number (40984218).

Almost surely, 2^650391954 is an apocalyptic number.

650391954 is an abundant number, since it is smaller than the sum of its proper divisors (661103022).

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

650391954 is a wasteful number, since it uses less digits than its factorization.

650391954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930.

The product of its (nonzero) digits is 145800, while the sum is 42.

The square root of 650391954 is about 25502.7832598719. The cubic root of 650391954 is about 866.4131861921.

The spelling of 650391954 in words is "six hundred fifty million, three hundred ninety-one thousand, nine hundred fifty-four".