149387633889 has 16 divisors (see below), whose sum is σ = 214964672832. Its totient is φ = 91733986368.

The previous prime is 149387633869. The next prime is 149387633897. The reversal of 149387633889 is 988336783941.

It is not a de Polignac number, because 149387633889 - 2¹⁹ = 149387109601 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (149387633849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4082914 + ... + 4119339.

It is an arithmetic number, because the mean of its divisors is an integer number (13435292052).

Almost surely, 2^149387633889 is an apocalyptic number.

It is an amenable number.

149387633889 is a deficient number, since it is larger than the sum of its proper divisors (65577038943).

149387633889 is a wasteful number, since it uses less digits than its factorization.

149387633889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8202736.

The product of its digits is 188116992, while the sum is 69.

The spelling of 149387633889 in words is "one hundred forty-nine billion, three hundred eighty-seven million, six hundred thirty-three thousand, eight hundred eighty-nine".