1118681377 has 4 divisors (see below), whose sum is σ = 1220379696. Its totient is φ = 1016983060.

The previous prime is 1118681341. The next prime is 1118681401. The reversal of 1118681377 is 7731868111.

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 not a de Polignac number, because 1118681377 - 2²³ = 1110292769 is a prime.

It is a super-2 number, since 2×1118681377² = 2502896046493232258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1118681777) 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, 50849143 + ... + 50849164.

It is an arithmetic number, because the mean of its divisors is an integer number (305094924).

Almost surely, 2^1118681377 is an apocalyptic number.

It is an amenable number.

1118681377 is a deficient number, since it is larger than the sum of its proper divisors (101698319).

1118681377 is a wasteful number, since it uses less digits than its factorization.

1118681377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101698318.

The product of its digits is 56448, while the sum is 43.

The square root of 1118681377 is about 33446.6945601505. The cubic root of 1118681377 is about 1038.0911042409.

The spelling of 1118681377 in words is "one billion, one hundred eighteen million, six hundred eighty-one thousand, three hundred seventy-seven".