1812332278357 has 4 divisors (see below), whose sum is σ = 1813233489856. Its totient is φ = 1811431066860.

The previous prime is 1812332278333. The next prime is 1812332278373. The reversal of 1812332278357 is 7538722332181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1812332278357 - 2³⁵ = 1777972539989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1812332272357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450602733 + ... + 450606754.

It is an arithmetic number, because the mean of its divisors is an integer number (453308372464).

Almost surely, 2^{1812332278357} is an apocalyptic number.

It is an amenable number.

1812332278357 is a deficient number, since it is larger than the sum of its proper divisors (901211499).

1812332278357 is an equidigital number, since it uses as much as digits as its factorization.

1812332278357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901211498.

The product of its digits is 3386880, while the sum is 52.

The spelling of 1812332278357 in words is "one trillion, eight hundred twelve billion, three hundred thirty-two million, two hundred seventy-eight thousand, three hundred fifty-seven".