149948578187 has 2 divisors, whose sum is σ = 149948578188. Its totient is φ = 149948578186.

The previous prime is 149948578181. The next prime is 149948578211. The reversal of 149948578187 is 781875849941.

149948578187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149948578187 is a prime.

It is a super-2 number, since 2×149948578187² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 149948578187.

It is not a weakly prime, because it can be changed into another prime (149948578181) by changing a digit.

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 as a sum of consecutive naturals, namely, 74974289093 + 74974289094.

It is an arithmetic number, because the mean of its divisors is an integer number (74974289094).

Almost surely, 2^149948578187 is an apocalyptic number.

149948578187 is a deficient number, since it is larger than the sum of its proper divisors (1).

149948578187 is an equidigital number, since it uses as much as digits as its factorization.

149948578187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162570240, while the sum is 71.

The spelling of 149948578187 in words is "one hundred forty-nine billion, nine hundred forty-eight million, five hundred seventy-eight thousand, one hundred eighty-seven".