18770673894 has 32 divisors (see below), whose sum is σ = 43346720256. Its totient is φ = 5307759360.

The previous prime is 18770673847. The next prime is 18770673899. The reversal of 18770673894 is 49837607781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18770673899) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2299642 + ... + 2307789.

It is an arithmetic number, because the mean of its divisors is an integer number (1354585008).

Almost surely, 2^18770673894 is an apocalyptic number.

18770673894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18770673894 is an abundant number, since it is smaller than the sum of its proper divisors (24576046362).

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

18770673894 is a wasteful number, since it uses less digits than its factorization.

18770673894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4607540.

The product of its (nonzero) digits is 14224896, while the sum is 60.

The spelling of 18770673894 in words is "eighteen billion, seven hundred seventy million, six hundred seventy-three thousand, eight hundred ninety-four".