18370805413 has 4 divisors (see below), whose sum is σ = 18492466528. Its totient is φ = 18249144300.

The previous prime is 18370805407. The next prime is 18370805461. The reversal of 18370805413 is 31450807381.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18370805413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18370805473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60830331 + ... + 60830632.

It is an arithmetic number, because the mean of its divisors is an integer number (4623116632).

Almost surely, 2^18370805413 is an apocalyptic number.

It is an amenable number.

18370805413 is a deficient number, since it is larger than the sum of its proper divisors (121661115).

18370805413 is a wasteful number, since it uses less digits than its factorization.

18370805413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121661114.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 18370805413 in words is "eighteen billion, three hundred seventy million, eight hundred five thousand, four hundred thirteen".