1398376816 has 40 divisors (see below), whose sum is σ = 2903590944. Its totient is φ = 650707200.

The previous prime is 1398376787. The next prime is 1398376817. The reversal of 1398376816 is 6186738931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398376817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37735 + ... + 64966.

Almost surely, 2^1398376816 is an apocalyptic number.

1398376816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1398376816 is an abundant number, since it is smaller than the sum of its proper divisors (1505214128).

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

1398376816 is a wasteful number, since it uses less digits than its factorization.

1398376816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102769 (or 102763 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 52.

The square root of 1398376816 is about 37394.8768683626. The cubic root of 1398376816 is about 1118.2564325063.

The spelling of 1398376816 in words is "one billion, three hundred ninety-eight million, three hundred seventy-six thousand, eight hundred sixteen".