18990148895 has 8 divisors (see below), whose sum is σ = 22989844656. Its totient is φ = 15057675136.

The previous prime is 18990148873. The next prime is 18990148897. The reversal of 18990148895 is 59884109981.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18990148895 - 2¹⁰ = 18990147871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18990148897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16804877 + ... + 16806006.

It is an arithmetic number, because the mean of its divisors is an integer number (2873730582).

Almost surely, 2^18990148895 is an apocalyptic number.

18990148895 is a deficient number, since it is larger than the sum of its proper divisors (3999695761).

18990148895 is a wasteful number, since it uses less digits than its factorization.

18990148895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33611001.

The product of its (nonzero) digits is 7464960, while the sum is 62.

The spelling of 18990148895 in words is "eighteen billion, nine hundred ninety million, one hundred forty-eight thousand, eight hundred ninety-five".