641902054 has 16 divisors (see below), whose sum is σ = 980518176. Its totient is φ = 315100800.

The previous prime is 641902049. The next prime is 641902081. The reversal of 641902054 is 450209146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24844 + ... + 43600.

It is an arithmetic number, because the mean of its divisors is an integer number (61282386).

Almost surely, 2^641902054 is an apocalyptic number.

641902054 is a deficient number, since it is larger than the sum of its proper divisors (338616122).

641902054 is a wasteful number, since it uses less digits than its factorization.

641902054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19071.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 641902054 is about 25335.7860347770. The cubic root of 641902054 is about 862.6267506503.

The spelling of 641902054 in words is "six hundred forty-one million, nine hundred two thousand, fifty-four".