1808157012479 has 2 divisors, whose sum is σ = 1808157012480. Its totient is φ = 1808157012478.

The previous prime is 1808157012437. The next prime is 1808157012533. The reversal of 1808157012479 is 9742107518081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1808157012479 - 2²⁴ = 1808140235263 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1808157012479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1808157012419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 904078506239 + 904078506240.

It is an arithmetic number, because the mean of its divisors is an integer number (904078506240).

Almost surely, 2^{1808157012479} is an apocalyptic number.

1808157012479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1808157012479 is an equidigital number, since it uses as much as digits as its factorization.

1808157012479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1128960, while the sum is 53.

The spelling of 1808157012479 in words is "one trillion, eight hundred eight billion, one hundred fifty-seven million, twelve thousand, four hundred seventy-nine".