1371992539 has 2 divisors, whose sum is σ = 1371992540. Its totient is φ = 1371992538.

The previous prime is 1371992509. The next prime is 1371992563. The reversal of 1371992539 is 9352991731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1371992539 - 2¹³ = 1371984347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1371992492 and 1371992501.

It is not a weakly prime, because it can be changed into another prime (1371992509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685996269 + 685996270.

It is an arithmetic number, because the mean of its divisors is an integer number (685996270).

Almost surely, 2^1371992539 is an apocalyptic number.

1371992539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1371992539 is an equidigital number, since it uses as much as digits as its factorization.

1371992539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 459270, while the sum is 49.

The square root of 1371992539 is about 37040.4176407340. The cubic root of 1371992539 is about 1111.1787221565.

The spelling of 1371992539 in words is "one billion, three hundred seventy-one million, nine hundred ninety-two thousand, five hundred thirty-nine".