1380120791 has 16 divisors (see below), whose sum is σ = 1625753088. Its totient is φ = 1147154400.

The previous prime is 1380120779. The next prime is 1380120851. The reversal of 1380120791 is 1970210831.

It is not a de Polignac number, because 1380120791 - 2³⁰ = 306378967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380120751) 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, 7556 + ... + 53078.

It is an arithmetic number, because the mean of its divisors is an integer number (101609568).

Almost surely, 2^1380120791 is an apocalyptic number.

1380120791 is a deficient number, since it is larger than the sum of its proper divisors (245632297).

1380120791 is an equidigital number, since it uses as much as digits as its factorization.

1380120791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45662.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 1380120791 is about 37149.9769986470. The cubic root of 1380120791 is about 1113.3687639073.

The spelling of 1380120791 in words is "one billion, three hundred eighty million, one hundred twenty thousand, seven hundred ninety-one".