1972853431809 has 8 divisors (see below), whose sum is σ = 2832815184192. Its totient is φ = 1214063650320.

The previous prime is 1972853431799. The next prime is 1972853431819. The reversal of 1972853431809 is 9081343582791.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1972853431799) and next prime (1972853431819).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1972853431809 - 2¹⁹ = 1972852907521 is a prime.

It is a super-2 number, since 2×1972853431809² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1972853431819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25292992677 + ... + 25292992754.

It is an arithmetic number, because the mean of its divisors is an integer number (354101898024).

Almost surely, 2^{1972853431809} is an apocalyptic number.

It is an amenable number.

1972853431809 is a deficient number, since it is larger than the sum of its proper divisors (859961752383).

1972853431809 is a wasteful number, since it uses less digits than its factorization.

1972853431809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50585985447.

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 1972853431809 in words is "one trillion, nine hundred seventy-two billion, eight hundred fifty-three million, four hundred thirty-one thousand, eight hundred nine".