2056147998 has 16 divisors (see below), whose sum is σ = 4132963200. Its totient is φ = 681938136.

The previous prime is 2056147993. The next prime is 2056148021. The reversal of 2056147998 is 8997416502.

It is a self number, because there is not a number n which added to its sum of digits gives 2056147998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056147993) 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, 859840 + ... + 862227.

It is an arithmetic number, because the mean of its divisors is an integer number (258310200).

Almost surely, 2^2056147998 is an apocalyptic number.

2056147998 is an abundant number, since it is smaller than the sum of its proper divisors (2076815202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2056147998 is a wasteful number, since it uses less digits than its factorization.

2056147998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722271.

The product of its (nonzero) digits is 1088640, while the sum is 51.

The square root of 2056147998 is about 45344.7681436348. The cubic root of 2056147998 is about 1271.6027459391.

The spelling of 2056147998 in words is "two billion, fifty-six million, one hundred forty-seven thousand, nine hundred ninety-eight".