1564790142379 has 2 divisors, whose sum is σ = 1564790142380. Its totient is φ = 1564790142378.

The previous prime is 1564790142343. The next prime is 1564790142401. The reversal of 1564790142379 is 9732410974651.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1564790142379 - 2³⁹ = 1015034328491 is a prime.

It is not a weakly prime, because it can be changed into another prime (1564790142679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 782395071189 + 782395071190.

It is an arithmetic number, because the mean of its divisors is an integer number (782395071190).

Almost surely, 2^{1564790142379} is an apocalyptic number.

1564790142379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1564790142379 is an equidigital number, since it uses as much as digits as its factorization.

1564790142379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11430720, while the sum is 58.

The spelling of 1564790142379 in words is "one trillion, five hundred sixty-four billion, seven hundred ninety million, one hundred forty-two thousand, three hundred seventy-nine".