145909863 has 16 divisors (see below), whose sum is σ = 235814400. Its totient is φ = 88430040.

The previous prime is 145909837. The next prime is 145909913. The reversal of 145909863 is 368909541.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-145909863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145909763) 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 15 ways as a sum of consecutive naturals, for example, 245343 + ... + 245936.

It is an arithmetic number, because the mean of its divisors is an integer number (14738400).

Almost surely, 2^145909863 is an apocalyptic number.

145909863 is a deficient number, since it is larger than the sum of its proper divisors (89904537).

145909863 is a wasteful number, since it uses less digits than its factorization.

145909863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491299 (or 491293 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 145909863 is about 12079.3155021301. The cubic root of 145909863 is about 526.4553577785.

The spelling of 145909863 in words is "one hundred forty-five million, nine hundred nine thousand, eight hundred sixty-three".