1392537361 has 2 divisors, whose sum is σ = 1392537362. Its totient is φ = 1392537360.

The previous prime is 1392537353. The next prime is 1392537389. The reversal of 1392537361 is 1637352931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1014040336 + 378497025 = 31844^2 + 19455^2 .

It is an emirp because it is prime and its reverse (1637352931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1392537361 - 2³ = 1392537353 is a prime.

It is not a weakly prime, because it can be changed into another prime (1392537301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696268680 + 696268681.

It is an arithmetic number, because the mean of its divisors is an integer number (696268681).

Almost surely, 2^1392537361 is an apocalyptic number.

It is an amenable number.

1392537361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1392537361 is an equidigital number, since it uses as much as digits as its factorization.

1392537361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 40.

The square root of 1392537361 is about 37316.7169107895. The cubic root of 1392537361 is about 1116.6976922347.

The spelling of 1392537361 in words is "one billion, three hundred ninety-two million, five hundred thirty-seven thousand, three hundred sixty-one".