149383881 has 12 divisors (see below), whose sum is σ = 215973108. Its totient is φ = 99498624.

The previous prime is 149383859. The next prime is 149383891. The reversal of 149383881 is 188383941.

149383881 is a `hidden beast` number, since 1 + 493 + 83 + 8 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 86657481 + 62726400 = 9309^2 + 7920^2 .

It is not a de Polignac number, because 149383881 - 2⁷ = 149383753 is a prime.

It is a super-2 number, since 2×149383881² = 44631087805244322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149383891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3781 + ... + 17693.

It is an arithmetic number, because the mean of its divisors is an integer number (17997759).

Almost surely, 2^149383881 is an apocalyptic number.

It is an amenable number.

149383881 is a deficient number, since it is larger than the sum of its proper divisors (66589227).

149383881 is a wasteful number, since it uses less digits than its factorization.

149383881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15112 (or 15109 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 149383881 is about 12222.2698792000. The cubic root of 149383881 is about 530.6008150314.

The spelling of 149383881 in words is "one hundred forty-nine million, three hundred eighty-three thousand, eight hundred eighty-one".