145844643 has 16 divisors (see below), whose sum is σ = 222419456. Its totient is φ = 83272320.

The previous prime is 145844597. The next prime is 145844659. The reversal of 145844643 is 346448541.

It is not a de Polignac number, because 145844643 - 2¹³ = 145836451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145844443) 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, 36555 + ... + 40347.

It is an arithmetic number, because the mean of its divisors is an integer number (13901216).

Almost surely, 2^145844643 is an apocalyptic number.

145844643 is a deficient number, since it is larger than the sum of its proper divisors (76574813).

145844643 is a wasteful number, since it uses less digits than its factorization.

145844643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5634.

The product of its digits is 184320, while the sum is 39.

The square root of 145844643 is about 12076.6155441001. The cubic root of 145844643 is about 526.3769062952.

The spelling of 145844643 in words is "one hundred forty-five million, eight hundred forty-four thousand, six hundred forty-three".