1572378952019 has 2 divisors, whose sum is σ = 1572378952020. Its totient is φ = 1572378952018.

The previous prime is 1572378952007. The next prime is 1572378952063. The reversal of 1572378952019 is 9102598732751.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1572378952019 is a prime.

It is a super-2 number, since 2×1572378952019² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1572378952099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 786189476009 + 786189476010.

It is an arithmetic number, because the mean of its divisors is an integer number (786189476010).

Almost surely, 2^{1572378952019} is an apocalyptic number.

1572378952019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1572378952019 is an equidigital number, since it uses as much as digits as its factorization.

1572378952019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9525600, while the sum is 59.

The spelling of 1572378952019 in words is "one trillion, five hundred seventy-two billion, three hundred seventy-eight million, nine hundred fifty-two thousand, nineteen".