1318779976 has 16 divisors (see below), whose sum is σ = 2473209900. Its totient is φ = 659257344.

The previous prime is 1318779953. The next prime is 1318779989. The reversal of 1318779976 is 6799778131.

It can be written as a sum of positive squares in 2 ways, for example, as 1290964900 + 27815076 = 35930^2 + 5274^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1318779976.

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, 35176 + ... + 62248.

Almost surely, 2^1318779976 is an apocalyptic number.

It is an amenable number.

1318779976 is a deficient number, since it is larger than the sum of its proper divisors (1154429924).

1318779976 is a wasteful number, since it uses less digits than its factorization.

1318779976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33168 (or 33164 counting only the distinct ones).

The product of its digits is 4000752, while the sum is 58.

The square root of 1318779976 is about 36315.0103400784. The cubic root of 1318779976 is about 1096.6232469370.

The spelling of 1318779976 in words is "one billion, three hundred eighteen million, seven hundred seventy-nine thousand, nine hundred seventy-six".