641042383 has 2 divisors, whose sum is σ = 641042384. Its totient is φ = 641042382.

The previous prime is 641042371. The next prime is 641042429. The reversal of 641042383 is 383240146.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-641042383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641043383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320521191 + 320521192.

It is an arithmetic number, because the mean of its divisors is an integer number (320521192).

Almost surely, 2^641042383 is an apocalyptic number.

641042383 is a deficient number, since it is larger than the sum of its proper divisors (1).

641042383 is an equidigital number, since it uses as much as digits as its factorization.

641042383 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 641042383 is about 25318.8148024350. The cubic root of 641042383 is about 862.2414860053.

The spelling of 641042383 in words is "six hundred forty-one million, forty-two thousand, three hundred eighty-three".