1398481264 has 20 divisors (see below), whose sum is σ = 2735867056. Its totient is φ = 692451072.

The previous prime is 1398481241. The next prime is 1398481309. The reversal of 1398481264 is 4621848931.

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, 422649 + ... + 425944.

Almost surely, 2^1398481264 is an apocalyptic number.

It is an amenable number.

1398481264 is a deficient number, since it is larger than the sum of its proper divisors (1337385792).

1398481264 is a wasteful number, since it uses less digits than its factorization.

1398481264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848704 (or 848698 counting only the distinct ones).

The product of its digits is 331776, while the sum is 46.

The square root of 1398481264 is about 37396.2733972250. The cubic root of 1398481264 is about 1118.2842735333.

The spelling of 1398481264 in words is "one billion, three hundred ninety-eight million, four hundred eighty-one thousand, two hundred sixty-four".