149443797139 has 12 divisors (see below), whose sum is σ = 187215307104. Its totient is φ = 118241245584.

The previous prime is 149443797137. The next prime is 149443797163. The reversal of 149443797139 is 931797344941.

It is a happy number.

It is not a de Polignac number, because 149443797139 - 2¹ = 149443797137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149443797137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117302187 + ... + 117303460.

It is an arithmetic number, because the mean of its divisors is an integer number (15601275592).

Almost surely, 2^149443797139 is an apocalyptic number.

149443797139 is a deficient number, since it is larger than the sum of its proper divisors (37771509965).

149443797139 is a wasteful number, since it uses less digits than its factorization.

149443797139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234605674 (or 234605667 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 61.

The spelling of 149443797139 in words is "one hundred forty-nine billion, four hundred forty-three million, seven hundred ninety-seven thousand, one hundred thirty-nine".