1375998976 has 88 divisors (see below), whose sum is σ = 3024319680. Its totient is φ = 620544000.

The previous prime is 1375998959. The next prime is 1375999043. The reversal of 1375998976 is 6798995731.

It is a tau number, because it is divible by the number of its divisors (88).

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1700460 + ... + 1701268.

Almost surely, 2^1375998976 is an apocalyptic number.

1375998976 is a gapful number since it is divisible by the number (16) 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 1375998976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1512159840).

1375998976 is an abundant number, since it is smaller than the sum of its proper divisors (1648320704).

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

1375998976 is a wasteful number, since it uses less digits than its factorization.

1375998976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991 (or 973 counting only the distinct ones).

The product of its digits is 25719120, while the sum is 64.

The square root of 1375998976 is about 37094.4601793853. The cubic root of 1375998976 is about 1112.2592773948.

The spelling of 1375998976 in words is "one billion, three hundred seventy-five million, nine hundred ninety-eight thousand, nine hundred seventy-six".