1858318474 has 4 divisors (see below), whose sum is σ = 2787477714. Its totient is φ = 929159236.

The previous prime is 1858318471. The next prime is 1858318507. The reversal of 1858318474 is 4748138581.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 989542849 + 868775625 = 31457^2 + 29475^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1858318471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 464579617 + ... + 464579620.

Almost surely, 2^1858318474 is an apocalyptic number.

1858318474 is a deficient number, since it is larger than the sum of its proper divisors (929159240).

1858318474 is an equidigital number, since it uses as much as digits as its factorization.

1858318474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929159239.

The product of its digits is 860160, while the sum is 49.

The square root of 1858318474 is about 43108.2181724088. The cubic root of 1858318474 is about 1229.4382333445.

The spelling of 1858318474 in words is "one billion, eight hundred fifty-eight million, three hundred eighteen thousand, four hundred seventy-four".