1398875868 has 108 divisors (see below), whose sum is σ = 3953022528. Its totient is φ = 416482560.

The previous prime is 1398875833. The next prime is 1398875887. The reversal of 1398875868 is 8685788931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 184896 + ... + 192312.

Almost surely, 2^1398875868 is an apocalyptic number.

1398875868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1398875868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1976511264).

1398875868 is an abundant number, since it is smaller than the sum of its proper divisors (2554146660).

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

1398875868 is a wasteful number, since it uses less digits than its factorization.

1398875868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7484 (or 7466 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 63.

The square root of 1398875868 is about 37401.5490053554. The cubic root of 1398875868 is about 1118.3894442783.

The spelling of 1398875868 in words is "one billion, three hundred ninety-eight million, eight hundred seventy-five thousand, eight hundred sixty-eight".