149375293081 has 9 divisors (see below), whose sum is σ = 173766243231. Its totient is φ = 128033646552.

The previous prime is 149375293073. The next prime is 149375293087. The reversal of 149375293081 is 180392573941.

The square root of 149375293081 is 386491.

It is a perfect power (a square), and thus also a powerful number.

149375293081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 92103145225 + 57272147856 = 303485^2 + 239316^2 .

It is not a de Polignac number, because 149375293081 - 2³ = 149375293073 is a prime.

It is a super-2 number, since 2×149375293081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149375293087) 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 in 8 ways as a sum of consecutive naturals, for example, 2677831 + ... + 2733043.

It is an arithmetic number, because the mean of its divisors is an integer number (19307360359).

Almost surely, 2^149375293081 is an apocalyptic number.

149375293081 is the 386491-st square number.

149375293081 is the 193246-th centered octagonal number.

It is an amenable number.

149375293081 is a deficient number, since it is larger than the sum of its proper divisors (24390950150).

149375293081 is an frugal number, since it uses more digits than its factorization.

149375293081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110440 (or 55220 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 149375293081 in words is "one hundred forty-nine billion, three hundred seventy-five million, two hundred ninety-three thousand, eighty-one".