1392157783 has 2 divisors, whose sum is σ = 1392157784. Its totient is φ = 1392157782.

The previous prime is 1392157757. The next prime is 1392157787. The reversal of 1392157783 is 3877512931.

It is a strong prime.

It is an emirp because it is prime and its reverse (3877512931) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1392157783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1392157787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696078891 + 696078892.

It is an arithmetic number, because the mean of its divisors is an integer number (696078892).

Almost surely, 2^1392157783 is an apocalyptic number.

1392157783 is a deficient number, since it is larger than the sum of its proper divisors (1).

1392157783 is an equidigital number, since it uses as much as digits as its factorization.

1392157783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 46.

The square root of 1392157783 is about 37311.6306665897. The cubic root of 1392157783 is about 1116.5962198176.

The spelling of 1392157783 in words is "one billion, three hundred ninety-two million, one hundred fifty-seven thousand, seven hundred eighty-three".