143149189 has 4 divisors (see below), whose sum is σ = 147018124. Its totient is φ = 139280256.

The previous prime is 143149183. The next prime is 143149199. The reversal of 143149189 is 981941341.

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 87572164 + 55577025 = 9358^2 + 7455^2 .

It is a cyclic number.

It is not a de Polignac number, because 143149189 - 2¹¹ = 143147141 is a prime.

It is a super-2 number, since 2×143149189² = 40983380622715442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143149183) 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, 1934412 + ... + 1934485.

It is an arithmetic number, because the mean of its divisors is an integer number (36754531).

Almost surely, 2^143149189 is an apocalyptic number.

It is an amenable number.

143149189 is a deficient number, since it is larger than the sum of its proper divisors (3868935).

143149189 is an equidigital number, since it uses as much as digits as its factorization.

143149189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3868934.

The product of its digits is 31104, while the sum is 40.

The square root of 143149189 is about 11964.4970224410. The cubic root of 143149189 is about 523.1139448072.

The spelling of 143149189 in words is "one hundred forty-three million, one hundred forty-nine thousand, one hundred eighty-nine".