641319022 has 4 divisors (see below), whose sum is σ = 961978536. Its totient is φ = 320659510.

The previous prime is 641319017. The next prime is 641319023. The reversal of 641319022 is 220913146.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 220913146 = 2 ⋅110456573.

It is a super-2 number, since 2×641319022² = 822580175958072968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641319023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160329754 + ... + 160329757.

It is an arithmetic number, because the mean of its divisors is an integer number (240494634).

Almost surely, 2^641319022 is an apocalyptic number.

641319022 is a deficient number, since it is larger than the sum of its proper divisors (320659514).

641319022 is a wasteful number, since it uses less digits than its factorization.

641319022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320659513.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 641319022 is about 25324.2773243384. The cubic root of 641319022 is about 862.3655003320.

It can be divided in two parts, 64131 and 9022, that added together give a triangular number (73153 = T₃₈₂).

The spelling of 641319022 in words is "six hundred forty-one million, three hundred nineteen thousand, twenty-two".