149789443122 has 54 divisors (see below), whose sum is σ = 356772975741. Its totient is φ = 45385266960.

The previous prime is 149789443007. The next prime is 149789443129. The reversal of 149789443122 is 221344987941.

149789443122 is a `hidden beast` number, since 1 + 4 + 9 + 78 + 9 + 443 + 122 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 136774968561 + 13014474561 = 369831^2 + 114081^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=273669.

It is not an unprimeable number, because it can be changed into a prime (149789443129) 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 26 ways as a sum of consecutive naturals, for example, 18058008 + ... + 18066300.

Almost surely, 2^149789443122 is an apocalyptic number.

149789443122 is an abundant number, since it is smaller than the sum of its proper divisors (206983532619).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149789443122 is an frugal number, since it uses more digits than its factorization.

149789443122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16616 (or 8309 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 149789443122 in words is "one hundred forty-nine billion, seven hundred eighty-nine million, four hundred forty-three thousand, one hundred twenty-two".