19377413885 has 4 divisors (see below), whose sum is σ = 23252896668. Its totient is φ = 15501931104.

The previous prime is 19377413873. The next prime is 19377413917. The reversal of 19377413885 is 58831477391.

It is a happy number.

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 9573839716 + 9803574169 = 97846^2 + 99013^2 .

It is a cyclic number.

It is not a de Polignac number, because 19377413885 - 2¹² = 19377409789 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19377413885.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1937741384 + ... + 1937741393.

It is an arithmetic number, because the mean of its divisors is an integer number (5813224167).

Almost surely, 2^19377413885 is an apocalyptic number.

It is an amenable number.

19377413885 is a deficient number, since it is larger than the sum of its proper divisors (3875482783).

19377413885 is an equidigital number, since it uses as much as digits as its factorization.

19377413885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3875482782.

The product of its digits is 5080320, while the sum is 56.

The spelling of 19377413885 in words is "nineteen billion, three hundred seventy-seven million, four hundred thirteen thousand, eight hundred eighty-five".