18273821010 has 32 divisors (see below), whose sum is σ = 44412330240. Its totient is φ = 4811334528.

The previous prime is 18273820973. The next prime is 18273821017. The reversal of 18273821010 is 1012837281.

It is not an unprimeable number, because it can be changed into a prime (18273821017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3852867 + ... + 3857606.

It is an arithmetic number, because the mean of its divisors is an integer number (1387885320).

Almost surely, 2^18273821010 is an apocalyptic number.

18273821010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18273821010 is an abundant number, since it is smaller than the sum of its proper divisors (26138509230).

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

18273821010 is a wasteful number, since it uses less digits than its factorization.

18273821010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7710562.

The product of its (nonzero) digits is 5376, while the sum is 33.

The spelling of 18273821010 in words is "eighteen billion, two hundred seventy-three million, eight hundred twenty-one thousand, ten".