1318489492 has 6 divisors (see below), whose sum is σ = 2307356618. Its totient is φ = 659244744.

The previous prime is 1318489483. The next prime is 1318489517. The reversal of 1318489492 is 2949848131.

It can be written as a sum of positive squares in only one way, i.e., 876396816 + 442092676 = 29604^2 + 21026^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164811183 + ... + 164811190.

Almost surely, 2^1318489492 is an apocalyptic number.

It is an amenable number.

1318489492 is a deficient number, since it is larger than the sum of its proper divisors (988867126).

1318489492 is a wasteful number, since it uses less digits than its factorization.

1318489492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329622377 (or 329622375 counting only the distinct ones).

The product of its digits is 497664, while the sum is 49.

The square root of 1318489492 is about 36311.0106166160. The cubic root of 1318489492 is about 1096.5427243063.

The spelling of 1318489492 in words is "one billion, three hundred eighteen million, four hundred eighty-nine thousand, four hundred ninety-two".