1390164129 has 6 divisors (see below), whose sum is σ = 2008014866. Its totient is φ = 926776080.

The previous prime is 1390164119. The next prime is 1390164131. The reversal of 1390164129 is 9214610931.

It is a happy number.

1390164129 is a `hidden beast` number, since 1 + 3 + 9 + 0 + 1 + 641 + 2 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1297080225 + 93083904 = 36015^2 + 9648^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1390164129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1390164093 and 1390164102.

It is not an unprimeable number, because it can be changed into a prime (1390164119) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77231332 + ... + 77231349.

Almost surely, 2^1390164129 is an apocalyptic number.

It is an amenable number.

1390164129 is a deficient number, since it is larger than the sum of its proper divisors (617850737).

1390164129 is a wasteful number, since it uses less digits than its factorization.

1390164129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154462687 (or 154462684 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 1390164129 is about 37284.9048409675. The cubic root of 1390164129 is about 1116.0629541124.

The spelling of 1390164129 in words is "one billion, three hundred ninety million, one hundred sixty-four thousand, one hundred twenty-nine".