1338518456 has 24 divisors (see below), whose sum is σ = 2758622160. Its totient is φ = 608417040.

The previous prime is 1338518453. The next prime is 1338518459. The reversal of 1338518456 is 6548158331.

It is an interprime number because it is at equal distance from previous prime (1338518453) and next prime (1338518459).

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338518453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 690416 + ... + 692351.

It is an arithmetic number, because the mean of its divisors is an integer number (114942590).

Almost surely, 2^1338518456 is an apocalyptic number.

It is an amenable number.

1338518456 is an abundant number, since it is smaller than the sum of its proper divisors (1420103704).

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

1338518456 is a wasteful number, since it uses less digits than its factorization.

1338518456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382795 (or 1382780 counting only the distinct ones).

The product of its digits is 345600, while the sum is 44.

The square root of 1338518456 is about 36585.7684899470. The cubic root of 1338518456 is about 1102.0673123113.

The spelling of 1338518456 in words is "one billion, three hundred thirty-eight million, five hundred eighteen thousand, four hundred fifty-six".