1375378801 has 4 divisors (see below), whose sum is σ = 1377168100. Its totient is φ = 1373589504.

The previous prime is 1375378789. The next prime is 1375378867. The reversal of 1375378801 is 1088735731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1088735731 = 25583 ⋅42557.

It can be written as a sum of positive squares in 2 ways, for example, as 381616225 + 993762576 = 19535^2 + 31524^2 .

It is a cyclic number.

It is not a de Polignac number, because 1375378801 - 2⁵ = 1375378769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1375379801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 893496 + ... + 895033.

It is an arithmetic number, because the mean of its divisors is an integer number (344292025).

Almost surely, 2^1375378801 is an apocalyptic number.

It is an amenable number.

1375378801 is a deficient number, since it is larger than the sum of its proper divisors (1789299).

1375378801 is an equidigital number, since it uses as much as digits as its factorization.

1375378801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1789298.

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 1375378801 is about 37086.0998353831. The cubic root of 1375378801 is about 1112.0921505612.

The spelling of 1375378801 in words is "one billion, three hundred seventy-five million, three hundred seventy-eight thousand, eight hundred one".