149188141 has 4 divisors (see below), whose sum is σ = 157963932. Its totient is φ = 140412352.

The previous prime is 149188121. The next prime is 149188147. The reversal of 149188141 is 141881941.

149188141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 130439241 + 18748900 = 11421^2 + 4330^2 .

It is a cyclic number.

It is not a de Polignac number, because 149188141 - 2¹³ = 149179949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149188141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149188147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4387870 + ... + 4387903.

It is an arithmetic number, because the mean of its divisors is an integer number (39490983).

Almost surely, 2^149188141 is an apocalyptic number.

It is an amenable number.

149188141 is a deficient number, since it is larger than the sum of its proper divisors (8775791).

149188141 is an equidigital number, since it uses as much as digits as its factorization.

149188141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8775790.

The product of its digits is 9216, while the sum is 37.

The square root of 149188141 is about 12214.2597401562. The cubic root of 149188141 is about 530.3689622619.

The spelling of 149188141 in words is "one hundred forty-nine million, one hundred eighty-eight thousand, one hundred forty-one".