1972853431819 has 2 divisors, whose sum is σ = 1972853431820. Its totient is φ = 1972853431818.

The previous prime is 1972853431799. The next prime is 1972853431849. The reversal of 1972853431819 is 9181343582791.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1972853431819 - 2¹³ = 1972853423627 is a prime.

It is a super-2 number, since 2×1972853431819² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1972853431849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986426715909 + 986426715910.

It is an arithmetic number, because the mean of its divisors is an integer number (986426715910).

Almost surely, 2^{1972853431819} is an apocalyptic number.

1972853431819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1972853431819 is an equidigital number, since it uses as much as digits as its factorization.

1972853431819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13063680, while the sum is 61.

The spelling of 1972853431819 in words is "one trillion, nine hundred seventy-two billion, eight hundred fifty-three million, four hundred thirty-one thousand, eight hundred nineteen".