1858416494 has 24 divisors (see below), whose sum is σ = 3084435984. Its totient is φ = 839124000.

The previous prime is 1858416487. The next prime is 1858416503. The reversal of 1858416494 is 4946148581.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11114 + ... + 61970.

It is an arithmetic number, because the mean of its divisors is an integer number (128518166).

Almost surely, 2^1858416494 is an apocalyptic number.

1858416494 is a deficient number, since it is larger than the sum of its proper divisors (1226019490).

1858416494 is a wasteful number, since it uses less digits than its factorization.

1858416494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51032 (or 51021 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 50.

The square root of 1858416494 is about 43109.3550636054. The cubic root of 1858416494 is about 1229.4598491975.

The spelling of 1858416494 in words is "one billion, eight hundred fifty-eight million, four hundred sixteen thousand, four hundred ninety-four".