1640514983 has 2 divisors, whose sum is σ = 1640514984. Its totient is φ = 1640514982.

The previous prime is 1640514971. The next prime is 1640515013. The reversal of 1640514983 is 3894150461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1640514983 - 2⁸ = 1640514727 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1640514983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1640514913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820257491 + 820257492.

It is an arithmetic number, because the mean of its divisors is an integer number (820257492).

Almost surely, 2^1640514983 is an apocalyptic number.

1640514983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1640514983 is an equidigital number, since it uses as much as digits as its factorization.

1640514983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 1640514983 is about 40503.2712629486. The cubic root of 1640514983 is about 1179.3971312371.

The spelling of 1640514983 in words is "one billion, six hundred forty million, five hundred fourteen thousand, nine hundred eighty-three".