1218965464 has 16 divisors (see below), whose sum is σ = 2286438120. Its totient is φ = 609248640.

The previous prime is 1218965459. The next prime is 1218965471. The reversal of 1218965464 is 4645698121.

It is a happy number.

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, 6049 + ... + 49744.

Almost surely, 2^1218965464 is an apocalyptic number.

It is an amenable number.

1218965464 is a deficient number, since it is larger than the sum of its proper divisors (1067472656).

1218965464 is a wasteful number, since it uses less digits than its factorization.

1218965464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58530 (or 58526 counting only the distinct ones).

The product of its digits is 414720, while the sum is 46.

The square root of 1218965464 is about 34913.6859125472. The cubic root of 1218965464 is about 1068.2276140063.

The spelling of 1218965464 in words is "one billion, two hundred eighteen million, nine hundred sixty-five thousand, four hundred sixty-four".