18642460149 has 24 divisors (see below), whose sum is σ = 27931918560. Its totient is φ = 12425375376.

The previous prime is 18642460129. The next prime is 18642460171. The reversal of 18642460149 is 94106424681.

18642460149 is a `hidden beast` number, since 1 + 8 + 6 + 42 + 460 + 149 = 666.

It is not a de Polignac number, because 18642460149 - 2⁸ = 18642459893 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18642460129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1641639 + ... + 1652955.

It is an arithmetic number, because the mean of its divisors is an integer number (1163829940).

Almost surely, 2^18642460149 is an apocalyptic number.

It is an amenable number.

18642460149 is a deficient number, since it is larger than the sum of its proper divisors (9289458411).

18642460149 is an equidigital number, since it uses as much as digits as its factorization.

18642460149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18111 (or 18099 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 18642460149 in words is "eighteen billion, six hundred forty-two million, four hundred sixty thousand, one hundred forty-nine".