146137489 has 8 divisors (see below), whose sum is σ = 150800328. Its totient is φ = 141527040.

The previous prime is 146137447. The next prime is 146137529. The reversal of 146137489 is 984731641.

It can be written as a sum of positive squares in 4 ways, for example, as 11971600 + 134165889 = 3460^2 + 11583^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 146137489 - 2²³ = 137748881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146137289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7392 + ... + 18625.

It is an arithmetic number, because the mean of its divisors is an integer number (18850041).

Almost surely, 2^146137489 is an apocalyptic number.

It is an amenable number.

146137489 is a deficient number, since it is larger than the sum of its proper divisors (4662839).

146137489 is a wasteful number, since it uses less digits than its factorization.

146137489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26195.

The product of its digits is 145152, while the sum is 43.

The square root of 146137489 is about 12088.7339701062. The cubic root of 146137489 is about 526.7289802803.

Adding to 146137489 its product of digits (145152), we get a palindrome (146282641).

The spelling of 146137489 in words is "one hundred forty-six million, one hundred thirty-seven thousand, four hundred eighty-nine".