2056153681 has 8 divisors (see below), whose sum is σ = 2087973504. Its totient is φ = 2024413440.

The previous prime is 2056153667. The next prime is 2056153699. The reversal of 2056153681 is 1863516502.

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

It is a cyclic number.

It is not a de Polignac number, because 2056153681 - 2¹³ = 2056145489 is a prime.

It is a super-2 number, since 2×2056153681² = 8455535919779699522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2056153681.

It is not an unprimeable number, because it can be changed into a prime (2056153601) 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, 33265 + ... + 72241.

It is an arithmetic number, because the mean of its divisors is an integer number (260996688).

Almost surely, 2^2056153681 is an apocalyptic number.

It is an amenable number.

2056153681 is a deficient number, since it is larger than the sum of its proper divisors (31819823).

2056153681 is an equidigital number, since it uses as much as digits as its factorization.

2056153681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39791.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 2056153681 is about 45344.8308079322. The cubic root of 2056153681 is about 1271.6039174682.

The spelling of 2056153681 in words is "two billion, fifty-six million, one hundred fifty-three thousand, six hundred eighty-one".