11918046437 has 16 divisors (see below), whose sum is σ = 13070960064. Its totient is φ = 10776864000.

The previous prime is 11918046403. The next prime is 11918046449. The reversal of 11918046437 is 73464081911.

It is a cyclic number.

It is not a de Polignac number, because 11918046437 - 2⁶ = 11918046373 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 (11918046487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1708637 + ... + 1715597.

It is an arithmetic number, because the mean of its divisors is an integer number (816935004).

Almost surely, 2^11918046437 is an apocalyptic number.

It is an amenable number.

11918046437 is a deficient number, since it is larger than the sum of its proper divisors (1152913627).

11918046437 is a wasteful number, since it uses less digits than its factorization.

11918046437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7780.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 11918046437 in words is "eleven billion, nine hundred eighteen million, forty-six thousand, four hundred thirty-seven".