2056147881 has 8 divisors (see below), whose sum is σ = 2829967104. Its totient is φ = 1326546960.

The previous prime is 2056147853. The next prime is 2056147883. The reversal of 2056147881 is 1887416502.

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

It is not a de Polignac number, because 2056147881 - 2⁹ = 2056147369 is a prime.

It is a super-2 number, since 2×2056147881² = 8455488217081580322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2056147883) 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 7 ways as a sum of consecutive naturals, for example, 11054466 + ... + 11054651.

It is an arithmetic number, because the mean of its divisors is an integer number (353745888).

Almost surely, 2^2056147881 is an apocalyptic number.

It is an amenable number.

2056147881 is a deficient number, since it is larger than the sum of its proper divisors (773819223).

2056147881 is a wasteful number, since it uses less digits than its factorization.

2056147881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22109151.

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 2056147881 is about 45344.7668535191. The cubic root of 2056147881 is about 1271.6027218200.

The spelling of 2056147881 in words is "two billion, fifty-six million, one hundred forty-seven thousand, eight hundred eighty-one".