149430861 has 12 divisors (see below), whose sum is σ = 217756188. Its totient is φ = 98738304.

The previous prime is 149430859. The next prime is 149430889. The reversal of 149430861 is 168034941.

149430861 is a `hidden beast` number, since 149 + 430 + 86 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 32661225 + 116769636 = 5715^2 + 10806^2 .

It is not a de Polignac number, because 149430861 - 2¹ = 149430859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149430361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72450 + ... + 74483.

It is an arithmetic number, because the mean of its divisors is an integer number (18146349).

Almost surely, 2^149430861 is an apocalyptic number.

It is an amenable number.

149430861 is a deficient number, since it is larger than the sum of its proper divisors (68325327).

149430861 is a wasteful number, since it uses less digits than its factorization.

149430861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147052 (or 147049 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 149430861 is about 12224.1916297152. The cubic root of 149430861 is about 530.6564323966.

The spelling of 149430861 in words is "one hundred forty-nine million, four hundred thirty thousand, eight hundred sixty-one".