641150943 has 4 divisors (see below), whose sum is σ = 854867928. Its totient is φ = 427433960.

The previous prime is 641150899. The next prime is 641150947. The reversal of 641150943 is 349051146.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 641150943 - 2⁹ = 641150431 is a prime.

It is a super-2 number, since 2×641150943² = 822149063419578498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641150947) 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, 106858488 + ... + 106858493.

It is an arithmetic number, because the mean of its divisors is an integer number (213716982).

Almost surely, 2^641150943 is an apocalyptic number.

641150943 is a deficient number, since it is larger than the sum of its proper divisors (213716985).

641150943 is a wasteful number, since it uses less digits than its factorization.

641150943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213716984.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 641150943 is about 25320.9585719024. The cubic root of 641150943 is about 862.2901565534.

The spelling of 641150943 in words is "six hundred forty-one million, one hundred fifty thousand, nine hundred forty-three".