18490441149 has 6 divisors (see below), whose sum is σ = 26708415006. Its totient is φ = 12326960760.

The previous prime is 18490441139. The next prime is 18490441159. The reversal of 18490441149 is 94114409481.

It is a happy number.

18490441149 is a `hidden beast` number, since 1 + 8 + 490 + 44 + 114 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (18490441139) and next prime (18490441159).

It can be written as a sum of positive squares in only one way, i.e., 18039176100 + 451265049 = 134310^2 + 21243^2 .

It is not a de Polignac number, because 18490441149 - 2⁸ = 18490440893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18490441139) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1027246722 + ... + 1027246739.

It is an arithmetic number, because the mean of its divisors is an integer number (4451402501).

Almost surely, 2^18490441149 is an apocalyptic number.

It is an amenable number.

18490441149 is a deficient number, since it is larger than the sum of its proper divisors (8217973857).

18490441149 is a wasteful number, since it uses less digits than its factorization.

18490441149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054493467 (or 2054493464 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 18490441149 in words is "eighteen billion, four hundred ninety million, four hundred forty-one thousand, one hundred forty-nine".