1880055991 has 8 divisors (see below), whose sum is σ = 2075681664. Its totient is φ = 1688548920.

The previous prime is 1880055973. The next prime is 1880056021. The reversal of 1880055991 is 1995500881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1880055991 is a prime.

It is a super-2 number, since 2×1880055991² = 7069221058589984162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1880055971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1028691 + ... + 1030516.

It is an arithmetic number, because the mean of its divisors is an integer number (259460208).

Almost surely, 2^1880055991 is an apocalyptic number.

1880055991 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1880055991 is a deficient number, since it is larger than the sum of its proper divisors (195625673).

1880055991 is a wasteful number, since it uses less digits than its factorization.

1880055991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059301.

The product of its (nonzero) digits is 129600, while the sum is 46.

The square root of 1880055991 is about 43359.6124406111. The cubic root of 1880055991 is about 1234.2134109438.

The spelling of 1880055991 in words is "one billion, eight hundred eighty million, fifty-five thousand, nine hundred ninety-one".