1880056021 has 2 divisors, whose sum is σ = 1880056022. Its totient is φ = 1880056020.

The previous prime is 1880055973. The next prime is 1880056033. The reversal of 1880056021 is 1206500881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1868400625 + 11655396 = 43225^2 + 3414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1880056021 is a prime.

It is a super-2 number, since 2×1880056021² = 7069221284196704882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1880056081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 940028010 + 940028011.

It is an arithmetic number, because the mean of its divisors is an integer number (940028011).

Almost surely, 2^1880056021 is an apocalyptic number.

It is an amenable number.

1880056021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1880056021 is an equidigital number, since it uses as much as digits as its factorization.

1880056021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 1880056021 is about 43359.6127865552. The cubic root of 1880056021 is about 1234.2134175086.

The spelling of 1880056021 in words is "one billion, eight hundred eighty million, fifty-six thousand, twenty-one".