1378297875 has 16 divisors (see below), whose sum is σ = 2293488288. Its totient is φ = 735092000.

The previous prime is 1378297873. The next prime is 1378297883. The reversal of 1378297875 is 5787928731.

It is not a de Polignac number, because 1378297875 - 2¹ = 1378297873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1378297873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1837356 + ... + 1838105.

It is an arithmetic number, because the mean of its divisors is an integer number (143343018).

Almost surely, 2^1378297875 is an apocalyptic number.

1378297875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1378297875 is a deficient number, since it is larger than the sum of its proper divisors (915190413).

1378297875 is an equidigital number, since it uses as much as digits as its factorization.

1378297875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3675479 (or 3675469 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 57.

The square root of 1378297875 is about 37125.4343408936. The cubic root of 1378297875 is about 1112.8783546657.

The spelling of 1378297875 in words is "one billion, three hundred seventy-eight million, two hundred ninety-seven thousand, eight hundred seventy-five".