18129788150 has 12 divisors (see below), whose sum is σ = 33721406052. Its totient is φ = 7251915240.

The previous prime is 18129788123. The next prime is 18129788177. The reversal of 18129788150 is 5188792181.

It is an interprime number because it is at equal distance from previous prime (18129788123) and next prime (18129788177).

It is a Harshad number since it is a multiple of its sum of digits (50), and also a Moran number because the ratio is a prime number: 362595763 = 18129788150 / (1 + 8 + 1 + 2 + 9 + 7 + 8 + 8 + 1 + 5 + 0).

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 5 ways as a sum of consecutive naturals, for example, 181297832 + ... + 181297931.

It is an arithmetic number, because the mean of its divisors is an integer number (2810117171).

Almost surely, 2^18129788150 is an apocalyptic number.

18129788150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18129788150 is a deficient number, since it is larger than the sum of its proper divisors (15591617902).

18129788150 is a wasteful number, since it uses less digits than its factorization.

18129788150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362595775 (or 362595770 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 50.

The spelling of 18129788150 in words is "eighteen billion, one hundred twenty-nine million, seven hundred eighty-eight thousand, one hundred fifty".