2093400965881 has 9 divisors (see below), whose sum is σ = 2128371338223. Its totient is φ = 2058996105720.

The previous prime is 2093400965869. The next prime is 2093400965891. The reversal of 2093400965881 is 1885690043902.

The square root of 2093400965881 is 1446859.

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

It can be written as a sum of positive squares in only one way, i.e., 68073506281 + 2025327459600 = 260909^2 + 1423140^2 .

It is not a de Polignac number, because 2093400965881 - 2⁵ = 2093400965849 is a prime.

It is a super-2 number, since 2×2093400965881² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2093400965801) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 88246540 + ... + 88270258.

It is an arithmetic number, because the mean of its divisors is an integer number (236485704247).

Almost surely, 2^{2093400965881} is an apocalyptic number.

2093400965881 is the 1446859-th square number.

2093400965881 is the 723430-th centered octagonal number.

It is an amenable number.

2093400965881 is a deficient number, since it is larger than the sum of its proper divisors (34970372342).

2093400965881 is an frugal number, since it uses more digits than its factorization.

2093400965881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47560 (or 23780 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 2093400965881 in words is "two trillion, ninety-three billion, four hundred million, nine hundred sixty-five thousand, eight hundred eighty-one".