1820047874 has 8 divisors (see below), whose sum is σ = 2730300048. Its totient is φ = 909947860.

The previous prime is 1820047861. The next prime is 1820047903. The reversal of 1820047874 is 4787400281.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

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, 872 + ... + 60339.

It is an arithmetic number, because the mean of its divisors is an integer number (341287506).

Almost surely, 2^1820047874 is an apocalyptic number.

1820047874 is a deficient number, since it is larger than the sum of its proper divisors (910252174).

1820047874 is a wasteful number, since it uses less digits than its factorization.

1820047874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76080.

The product of its (nonzero) digits is 100352, while the sum is 41.

The square root of 1820047874 is about 42662.0191036477. The cubic root of 1820047874 is about 1220.9398549207.

The spelling of 1820047874 in words is "one billion, eight hundred twenty million, forty-seven thousand, eight hundred seventy-four".