1880881393 has 4 divisors (see below), whose sum is σ = 1881427060. Its totient is φ = 1880335728.

The previous prime is 1880881349. The next prime is 1880881433. The reversal of 1880881393 is 3931880881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3931880881 = 19 ⋅206941099.

It can be written as a sum of positive squares in 2 ways, for example, as 57335184 + 1823546209 = 7572^2 + 42703^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1880881393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1880884393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267630 + ... + 274567.

It is an arithmetic number, because the mean of its divisors is an integer number (470356765).

Almost surely, 2^1880881393 is an apocalyptic number.

It is an amenable number.

1880881393 is a deficient number, since it is larger than the sum of its proper divisors (545667).

1880881393 is an equidigital number, since it uses as much as digits as its factorization.

1880881393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545666.

The product of its (nonzero) digits is 331776, while the sum is 49.

The square root of 1880881393 is about 43369.1294932236. The cubic root of 1880881393 is about 1234.3940036453.

The spelling of 1880881393 in words is "one billion, eight hundred eighty million, eight hundred eighty-one thousand, three hundred ninety-three".