1942113887 has 4 divisors (see below), whose sum is σ = 2219558736. Its totient is φ = 1664669040.

The previous prime is 1942113883. The next prime is 1942113889. The reversal of 1942113887 is 7883112491.

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

It is a cyclic number.

It is not a de Polignac number, because 1942113887 - 2² = 1942113883 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 (1942113883) 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, 138722414 + ... + 138722427.

It is an arithmetic number, because the mean of its divisors is an integer number (554889684).

Almost surely, 2^1942113887 is an apocalyptic number.

1942113887 is a deficient number, since it is larger than the sum of its proper divisors (277444849).

1942113887 is an equidigital number, since it uses as much as digits as its factorization.

1942113887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277444848.

The product of its digits is 96768, while the sum is 44.

The square root of 1942113887 is about 44069.4212237919. The cubic root of 1942113887 is about 1247.6465343002.

The spelling of 1942113887 in words is "one billion, nine hundred forty-two million, one hundred thirteen thousand, eight hundred eighty-seven".