1880855138 has 4 divisors (see below), whose sum is σ = 2821282710. Its totient is φ = 940427568.

The previous prime is 1880855101. The next prime is 1880855173. The reversal of 1880855138 is 8315580881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8315580881 = 1451 ⋅5730931.

It can be written as a sum of positive squares in only one way, i.e., 1666027489 + 214827649 = 40817^2 + 14657^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1880855092 and 1880855101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 470213783 + ... + 470213786.

Almost surely, 2^1880855138 is an apocalyptic number.

1880855138 is a deficient number, since it is larger than the sum of its proper divisors (940427572).

1880855138 is an equidigital number, since it uses as much as digits as its factorization.

1880855138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940427571.

The product of its (nonzero) digits is 307200, while the sum is 47.

The square root of 1880855138 is about 43368.8267999032. The cubic root of 1880855138 is about 1234.3882600321.

The spelling of 1880855138 in words is "one billion, eight hundred eighty million, eight hundred fifty-five thousand, one hundred thirty-eight".