145337889 has 16 divisors (see below), whose sum is σ = 202028544. Its totient is φ = 92832000.

The previous prime is 145337873. The next prime is 145337891. The reversal of 145337889 is 988733541.

It is not a de Polignac number, because 145337889 - 2⁴ = 145337873 is a prime.

It is a super-2 number, since 2×145337889² = 42246203957952642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145337839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1657 + ... + 17129.

It is an arithmetic number, because the mean of its divisors is an integer number (12626784).

Almost surely, 2^145337889 is an apocalyptic number.

It is an amenable number.

145337889 is a deficient number, since it is larger than the sum of its proper divisors (56690655).

145337889 is a wasteful number, since it uses less digits than its factorization.

145337889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15608.

The product of its digits is 725760, while the sum is 48.

The square root of 145337889 is about 12055.6164919095. The cubic root of 145337889 is about 525.7665464428.

It can be divided in two parts, 14533 and 7889, that added together give a palindrome (22422).

The spelling of 145337889 in words is "one hundred forty-five million, three hundred thirty-seven thousand, eight hundred eighty-nine".