641161402 has 16 divisors (see below), whose sum is σ = 1106416512. Its totient is φ = 272962800.

The previous prime is 641161397. The next prime is 641161439. The reversal of 641161402 is 204161146.

It is a super-2 number, since 2×641161402² = 822175886829211208, which contains 22 as substring.

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, 149533 + ... + 153760.

It is an arithmetic number, because the mean of its divisors is an integer number (69151032).

Almost surely, 2^641161402 is an apocalyptic number.

641161402 is a deficient number, since it is larger than the sum of its proper divisors (465255110).

641161402 is a wasteful number, since it uses less digits than its factorization.

641161402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303453.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 641161402 is about 25321.1650995763. The cubic root of 641161402 is about 862.2948453316.

The spelling of 641161402 in words is "six hundred forty-one million, one hundred sixty-one thousand, four hundred two".