641370113 has 4 divisors (see below), whose sum is σ = 644195760. Its totient is φ = 638544468.

The previous prime is 641370109. The next prime is 641370127. The reversal of 641370113 is 311073146.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 311073146 = 2 ⋅155536573.

It is a cyclic number.

It is not a de Polignac number, because 641370113 - 2² = 641370109 is a prime.

It is a super-2 number, since 2×641370113² = 822711243699265538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641370313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1412483 + ... + 1412936.

It is an arithmetic number, because the mean of its divisors is an integer number (161048940).

Almost surely, 2^641370113 is an apocalyptic number.

It is an amenable number.

641370113 is a deficient number, since it is larger than the sum of its proper divisors (2825647).

641370113 is a wasteful number, since it uses less digits than its factorization.

641370113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2825646.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 641370113 is about 25325.2860398456. The cubic root of 641370113 is about 862.3883999833.

The spelling of 641370113 in words is "six hundred forty-one million, three hundred seventy thousand, one hundred thirteen".