18150135398 has 4 divisors (see below), whose sum is σ = 27225203100. Its totient is φ = 9075067698.

The previous prime is 18150135397. The next prime is 18150135401. The reversal of 18150135398 is 89353105181.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18150135397) 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 as a sum of consecutive naturals, namely, 4537533848 + ... + 4537533851.

It is an arithmetic number, because the mean of its divisors is an integer number (6806300775).

Almost surely, 2^18150135398 is an apocalyptic number.

18150135398 is a deficient number, since it is larger than the sum of its proper divisors (9075067702).

18150135398 is an equidigital number, since it uses as much as digits as its factorization.

18150135398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9075067701.

The product of its (nonzero) digits is 129600, while the sum is 44.

The spelling of 18150135398 in words is "eighteen billion, one hundred fifty million, one hundred thirty-five thousand, three hundred ninety-eight".