1118211974 has 16 divisors (see below), whose sum is σ = 1888828416. Its totient is φ = 491881800.

The previous prime is 1118211949. The next prime is 1118211979. The reversal of 1118211974 is 4791128111.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118211979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 819122 + ... + 820485.

It is an arithmetic number, because the mean of its divisors is an integer number (118051776).

Almost surely, 2^1118211974 is an apocalyptic number.

1118211974 is a deficient number, since it is larger than the sum of its proper divisors (770616442).

1118211974 is a wasteful number, since it uses less digits than its factorization.

1118211974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639651.

The product of its digits is 4032, while the sum is 35.

The square root of 1118211974 is about 33439.6766431735. The cubic root of 1118211974 is about 1037.9458882572.

The spelling of 1118211974 in words is "one billion, one hundred eighteen million, two hundred eleven thousand, nine hundred seventy-four".