1118943937 has 4 divisors (see below), whose sum is σ = 1119057840. Its totient is φ = 1118830036.

The previous prime is 1118943929. The next prime is 1118943971. The reversal of 1118943937 is 7393498111.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7393498111 = 19001 ⋅389111.

It is a cyclic number.

It is not a de Polignac number, because 1118943937 - 2³ = 1118943929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1118946937) 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, 40663 + ... + 62380.

It is an arithmetic number, because the mean of its divisors is an integer number (279764460).

Almost surely, 2^1118943937 is an apocalyptic number.

It is an amenable number.

1118943937 is a deficient number, since it is larger than the sum of its proper divisors (113903).

1118943937 is a wasteful number, since it uses less digits than its factorization.

1118943937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113902.

The product of its digits is 163296, while the sum is 46.

The square root of 1118943937 is about 33450.6193814106. The cubic root of 1118943937 is about 1038.1723129106.

The spelling of 1118943937 in words is "one billion, one hundred eighteen million, nine hundred forty-three thousand, nine hundred thirty-seven".