2796400161 has 9 divisors (see below), whose sum is σ = 4039473841. Its totient is φ = 1864161012.

The previous prime is 2796400147. The next prime is 2796400163. The reversal of 2796400161 is 1610046972.

The square root of 2796400161 is 52881.

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

2796400161 is a `hidden beast` number, since 2 + 7 + 9 + 640 + 0 + 1 + 6 + 1 = 666.

2796400161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 2796400161 - 2²¹ = 2794303009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2796400163) 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, 149830 + ... + 167456.

Almost surely, 2^2796400161 is an apocalyptic number.

2796400161 is the 52881-st square number.

2796400161 is the 26441-st centered octagonal number.

It is an amenable number.

2796400161 is a deficient number, since it is larger than the sum of its proper divisors (1243073680).

2796400161 is an frugal number, since it uses more digits than its factorization.

2796400161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35260 (or 17630 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The cubic root of 2796400161 is about 1408.8554602083.

Multiplying 2796400161 by its sum of digits (36), we get a square (100670405796 = 317286²).

The spelling of 2796400161 in words is "two billion, seven hundred ninety-six million, four hundred thousand, one hundred sixty-one".