1819634618828 has 12 divisors (see below), whose sum is σ = 3429311397120. Its totient is φ = 839831362512.

The previous prime is 1819634618807. The next prime is 1819634618897. The reversal of 1819634618828 is 8288164369181.

It is a super-2 number, since 2×1819634618828² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17496486668 + ... + 17496486771.

It is an arithmetic number, because the mean of its divisors is an integer number (285775949760).

Almost surely, 2^{1819634618828} is an apocalyptic number.

It is an amenable number.

1819634618828 is a deficient number, since it is larger than the sum of its proper divisors (1609676778292).

1819634618828 is a wasteful number, since it uses less digits than its factorization.

1819634618828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34992973456 (or 34992973454 counting only the distinct ones).

The product of its digits is 31850496, while the sum is 65.

The spelling of 1819634618828 in words is "one trillion, eight hundred nineteen billion, six hundred thirty-four million, six hundred eighteen thousand, eight hundred twenty-eight".