146851989 has 8 divisors (see below), whose sum is σ = 195936672. Its totient is φ = 97834320.

The previous prime is 146851937. The next prime is 146851993. The reversal of 146851989 is 989158641.

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

It is not a de Polignac number, because 146851989 - 2⁹ = 146851477 is a prime.

It is a super-2 number, since 2×146851989² = 43131013346512242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146851909) 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, 11394 + ... + 20579.

It is an arithmetic number, because the mean of its divisors is an integer number (24492084).

Almost surely, 2^146851989 is an apocalyptic number.

It is an amenable number.

146851989 is a deficient number, since it is larger than the sum of its proper divisors (49084683).

146851989 is a wasteful number, since it uses less digits than its factorization.

146851989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33507.

The product of its digits is 622080, while the sum is 51.

The square root of 146851989 is about 12118.2502449817. The cubic root of 146851989 is about 527.5860183317.

The spelling of 146851989 in words is "one hundred forty-six million, eight hundred fifty-one thousand, nine hundred eighty-nine".