1800495042 has 16 divisors (see below), whose sum is σ = 3601456992. Its totient is φ = 600087200.

The previous prime is 1800495017. The next prime is 1800495061. The reversal of 1800495042 is 2405940081.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1800494994 and 1800495012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49453 + ... + 77759.

It is an arithmetic number, because the mean of its divisors is an integer number (225091062).

Almost surely, 2^1800495042 is an apocalyptic number.

1800495042 is an abundant number, since it is smaller than the sum of its proper divisors (1800961950).

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

1800495042 is a wasteful number, since it uses less digits than its factorization.

1800495042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38913.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 1800495042 is about 42432.2405960373. The cubic root of 1800495042 is about 1216.5519053908.

The spelling of 1800495042 in words is "one billion, eight hundred million, four hundred ninety-five thousand, forty-two".