146191139 has 8 divisors (see below), whose sum is σ = 147671568. Its totient is φ = 144718560.

The previous prime is 146191091. The next prime is 146191141. The reversal of 146191139 is 931191641.

146191139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146191139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 146191099 and 146191108.

It is not an unprimeable number, because it can be changed into a prime (146191169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39809 + ... + 43325.

It is an arithmetic number, because the mean of its divisors is an integer number (18458946).

Almost surely, 2^146191139 is an apocalyptic number.

146191139 is a deficient number, since it is larger than the sum of its proper divisors (1480429).

146191139 is a wasteful number, since it uses less digits than its factorization.

146191139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3925.

The product of its digits is 5832, while the sum is 35.

The square root of 146191139 is about 12090.9527746989. The cubic root of 146191139 is about 526.7934299811.

The spelling of 146191139 in words is "one hundred forty-six million, one hundred ninety-one thousand, one hundred thirty-nine".