1318454772 has 12 divisors (see below), whose sum is σ = 3076394496. Its totient is φ = 439484920.

The previous prime is 1318454741. The next prime is 1318454789. The reversal of 1318454772 is 2774548131.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54935604 + ... + 54935627.

It is an arithmetic number, because the mean of its divisors is an integer number (256366208).

Almost surely, 2^1318454772 is an apocalyptic number.

1318454772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1318454772 is an abundant number, since it is smaller than the sum of its proper divisors (1757939724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1318454772 is a wasteful number, since it uses less digits than its factorization.

1318454772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109871238 (or 109871236 counting only the distinct ones).

The product of its digits is 188160, while the sum is 42.

The square root of 1318454772 is about 36310.5325215701. The cubic root of 1318454772 is about 1096.5330990753.

The spelling of 1318454772 in words is "one billion, three hundred eighteen million, four hundred fifty-four thousand, seven hundred seventy-two".