641374453 has 16 divisors (see below), whose sum is σ = 690560640. Its totient is φ = 593510400.

The previous prime is 641374441. The next prime is 641374471. The reversal of 641374453 is 354473146.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-641374453 is a prime.

It is a super-2 number, since 2×641374453² = 822722377922098418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641374403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 833653 + ... + 834421.

It is an arithmetic number, because the mean of its divisors is an integer number (43160040).

Almost surely, 2^641374453 is an apocalyptic number.

It is an amenable number.

641374453 is a deficient number, since it is larger than the sum of its proper divisors (49186187).

641374453 is a wasteful number, since it uses less digits than its factorization.

641374453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548.

The product of its digits is 120960, while the sum is 37.

The square root of 641374453 is about 25325.3717248138. The cubic root of 641374453 is about 862.3903451717.

The spelling of 641374453 in words is "six hundred forty-one million, three hundred seventy-four thousand, four hundred fifty-three".