1808155683051 has 24 divisors (see below), whose sum is σ = 2561224593840. Its totient is φ = 1134443960832.

The previous prime is 1808155683041. The next prime is 1808155683143. The reversal of 1808155683051 is 1503865518081.

It is not a de Polignac number, because 1808155683051 - 2¹³ = 1808155674859 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 1808155682985 and 1808155683003.

It is not an unprimeable number, because it can be changed into a prime (1808155683041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12688785 + ... + 12830493.

It is an arithmetic number, because the mean of its divisors is an integer number (106717691410).

Almost surely, 2^{1808155683051} is an apocalyptic number.

1808155683051 is a deficient number, since it is larger than the sum of its proper divisors (753068910789).

1808155683051 is a wasteful number, since it uses less digits than its factorization.

1808155683051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156463 (or 156446 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 51.

The spelling of 1808155683051 in words is "one trillion, eight hundred eight billion, one hundred fifty-five million, six hundred eighty-three thousand, fifty-one".