18907667201413 has 4 divisors (see below), whose sum is σ = 18907882146828. Its totient is φ = 18907452256000.

The previous prime is 18907667201411. The next prime is 18907667201557. The reversal of 18907667201413 is 31410276670981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 615562638084 + 18292104563329 = 784578^2 + 4276927^2 .

It is a cyclic number.

It is not a de Polignac number, because 18907667201413 - 2¹ = 18907667201411 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 (18907667201411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107340706 + ... + 107516707.

It is an arithmetic number, because the mean of its divisors is an integer number (4726970536707).

Almost surely, 2^{18907667201413} is an apocalyptic number.

It is an amenable number.

18907667201413 is a deficient number, since it is larger than the sum of its proper divisors (214945415).

18907667201413 is an equidigital number, since it uses as much as digits as its factorization.

18907667201413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214945414.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The spelling of 18907667201413 in words is "eighteen trillion, nine hundred seven billion, six hundred sixty-seven million, two hundred one thousand, four hundred thirteen".