1845493986 has 16 divisors (see below), whose sum is σ = 4218272064. Its totient is φ = 527283984.

The previous prime is 1845493901. The next prime is 1845494017. The reversal of 1845493986 is 6893945481.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21970125 + ... + 21970208.

It is an arithmetic number, because the mean of its divisors is an integer number (263642004).

Almost surely, 2^1845493986 is an apocalyptic number.

1845493986 is an abundant number, since it is smaller than the sum of its proper divisors (2372778078).

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

1845493986 is a wasteful number, since it uses less digits than its factorization.

1845493986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43940345.

The product of its digits is 7464960, while the sum is 57.

The square root of 1845493986 is about 42959.2130514515. The cubic root of 1845493986 is about 1226.6035334782.

The spelling of 1845493986 in words is "one billion, eight hundred forty-five million, four hundred ninety-three thousand, nine hundred eighty-six".