1375871280 has 160 divisors (see below), whose sum is σ = 4925351424. Its totient is φ = 311205888.

The previous prime is 1375871269. The next prime is 1375871281. The reversal of 1375871280 is 821785731.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1375871281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158739 + ... + 167181.

Almost surely, 2^1375871280 is an apocalyptic number.

1375871280 is a gapful number since it is divisible by the number (10) 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 1375871280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2462675712).

1375871280 is an abundant number, since it is smaller than the sum of its proper divisors (3549480144).

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

1375871280 is a wasteful number, since it uses less digits than its factorization.

1375871280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8563 (or 8557 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 1375871280 is about 37092.7389120836. The cubic root of 1375871280 is about 1112.2248695556.

The spelling of 1375871280 in words is "one billion, three hundred seventy-five million, eight hundred seventy-one thousand, two hundred eighty".