18400000158 has 12 divisors (see below), whose sum is σ = 39866667048. Its totient is φ = 6133333380.

The previous prime is 18400000153. The next prime is 18400000217. The reversal of 18400000158 is 85100000481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18400000153) 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 5 ways as a sum of consecutive naturals, for example, 511111098 + ... + 511111133.

It is an arithmetic number, because the mean of its divisors is an integer number (3322222254).

Almost surely, 2^18400000158 is an apocalyptic number.

18400000158 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18400000158 is an abundant number, since it is smaller than the sum of its proper divisors (21466666890).

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

18400000158 is a wasteful number, since it uses less digits than its factorization.

18400000158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022222239 (or 1022222236 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The spelling of 18400000158 in words is "eighteen billion, four hundred million, one hundred fifty-eight", and thus it is an aban number.