2393694782649 has 27 divisors (see below), whose sum is σ = 3517557514159. Its totient is φ = 1568569652880.

The previous prime is 2393694782641. The next prime is 2393694782663. The reversal of 2393694782649 is 9462874963932.

The square root of 2393694782649 is 1547157.

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

2393694782649 is a `hidden beast` number, since 2 + 3 + 93 + 6 + 9 + 478 + 2 + 64 + 9 = 666.

2393694782649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 438451892649 + 1955242890000 = 662157^2 + 1398300^2 .

It is not a de Polignac number, because 2393694782649 - 2³ = 2393694782641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2393694782641) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 273842419 + ... + 273851159.

Almost surely, 2^{2393694782649} is an apocalyptic number.

2393694782649 is the 1547157-th square number.

2393694782649 is the 773579-th centered octagonal number.

It is an amenable number.

2393694782649 is a deficient number, since it is larger than the sum of its proper divisors (1123862731510).

2393694782649 is an frugal number, since it uses more digits than its factorization.

2393694782649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17606 (or 8803 counting only the distinct ones).

The product of its digits is 846526464, while the sum is 72.

The spelling of 2393694782649 in words is "two trillion, three hundred ninety-three billion, six hundred ninety-four million, seven hundred eighty-two thousand, six hundred forty-nine".