1812970380431 has 6 divisors (see below), whose sum is σ = 2108965544640. Its totient is φ = 1553974611756.

The previous prime is 1812970380409. The next prime is 1812970380451. The reversal of 1812970380431 is 1340830792181.

It is not a de Polignac number, because 1812970380431 - 2¹⁸ = 1812970118287 is a prime.

It is a super-2 number, since 2×1812970380431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1812970380451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18499697711 + ... + 18499697808.

It is an arithmetic number, because the mean of its divisors is an integer number (351494257440).

Almost surely, 2^{1812970380431} is an apocalyptic number.

1812970380431 is a deficient number, since it is larger than the sum of its proper divisors (295995164209).

1812970380431 is an equidigital number, since it uses as much as digits as its factorization.

1812970380431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36999395533 (or 36999395526 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 47.

The spelling of 1812970380431 in words is "one trillion, eight hundred twelve billion, nine hundred seventy million, three hundred eighty thousand, four hundred thirty-one".