1817712942 has 64 divisors (see below), whose sum is σ = 3832545024. Its totient is φ = 574076160.

The previous prime is 1817712889. The next prime is 1817712943. The reversal of 1817712942 is 2492177181.

It is a junction number, because it is equal to n+sod(n) for n = 1817712894 and 1817712903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1817712943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2400828 + ... + 2401584.

It is an arithmetic number, because the mean of its divisors is an integer number (59883516).

Almost surely, 2^1817712942 is an apocalyptic number.

1817712942 is an abundant number, since it is smaller than the sum of its proper divisors (2014832082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1817712942 is a wasteful number, since it uses less digits than its factorization.

1817712942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073.

The product of its digits is 56448, while the sum is 42.

The square root of 1817712942 is about 42634.6448560323. The cubic root of 1817712942 is about 1220.4175185679.

The spelling of 1817712942 in words is "one billion, eight hundred seventeen million, seven hundred twelve thousand, nine hundred forty-two".