149015789909 has 16 divisors (see below), whose sum is σ = 179278202880. Its totient is φ = 120997819440.

The previous prime is 149015789843. The next prime is 149015789927. The reversal of 149015789909 is 909987510941.

It is a cyclic number.

It is not a de Polignac number, because 149015789909 - 2⁸ = 149015789653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149015780909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3396704 + ... + 3440294.

It is an arithmetic number, because the mean of its divisors is an integer number (11204887680).

Almost surely, 2^149015789909 is an apocalyptic number.

149015789909 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

149015789909 is a deficient number, since it is larger than the sum of its proper divisors (30262412971).

149015789909 is a wasteful number, since it uses less digits than its factorization.

149015789909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69320.

The product of its (nonzero) digits is 7348320, while the sum is 62.

The spelling of 149015789909 in words is "one hundred forty-nine billion, fifteen million, seven hundred eighty-nine thousand, nine hundred nine".