2058194798881 has 21 divisors (see below), whose sum is σ = 2233130790709. Its totient is φ = 1896962670096.

The previous prime is 2058194798861. The next prime is 2058194798887. The reversal of 2058194798881 is 1888974918502.

The square root of 2058194798881 is 1434641.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 10 ways, for example, as 28025773281 + 2030169025600 = 167409^2 + 1424840^2 .

It is not a de Polignac number, because 2058194798881 - 2⁷ = 2058194798753 is a prime.

It is a super-2 number, since 2×2058194798881² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2058194798881.

It is not an unprimeable number, because it can be changed into a prime (2058194798887) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 3151905951 + ... + 3151906603.

Almost surely, 2^{2058194798881} is an apocalyptic number.

2058194798881 is the 1434641-st square number.

2058194798881 is the 717321-st centered octagonal number.

It is an amenable number.

2058194798881 is a deficient number, since it is larger than the sum of its proper divisors (174935991828).

2058194798881 is an frugal number, since it uses more digits than its factorization.

2058194798881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384 (or 666 counting only the distinct ones).

The product of its (nonzero) digits is 92897280, while the sum is 70.

The spelling of 2058194798881 in words is "two trillion, fifty-eight billion, one hundred ninety-four million, seven hundred ninety-eight thousand, eight hundred eighty-one".