1392709177161 has 9 divisors (see below), whose sum is σ = 2011696147591. Its totient is φ = 928470424512.

The previous prime is 1392709177147. The next prime is 1392709177187. The reversal of 1392709177161 is 1617719072931.

It is a happy number.

The square root of 1392709177161 is 1180131.

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

1392709177161 is a `hidden beast` number, since 1 + 392 + 7 + 0 + 91 + 7 + 7 + 161 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1017606825225 + 375102351936 = 1008765^2 + 612456^2 .

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

It is not a de Polignac number, because 1392709177161 - 2¹⁷ = 1392709046089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1392709177098 and 1392709177107.

It is not an unprimeable number, because it can be changed into a prime (1392709177261) 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, 3343705 + ... + 3737081.

Almost surely, 2^{1392709177161} is an apocalyptic number.

1392709177161 is the 1180131-st square number.

1392709177161 is the 590066-th centered octagonal number.

It is an amenable number.

1392709177161 is a deficient number, since it is larger than the sum of its proper divisors (618986970430).

1392709177161 is an frugal number, since it uses more digits than its factorization.

1392709177161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786760 (or 393380 counting only the distinct ones).

The product of its (nonzero) digits is 1000188, while the sum is 54.

The spelling of 1392709177161 in words is "one trillion, three hundred ninety-two billion, seven hundred nine million, one hundred seventy-seven thousand, one hundred sixty-one".