145843643 has 4 divisors (see below), whose sum is σ = 159102168. Its totient is φ = 132585120.

The previous prime is 145843637. The next prime is 145843669. The reversal of 145843643 is 346348541.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145843643 - 2¹⁶ = 145778107 is a prime.

It is a super-2 number, since 2×145843643² = 42540736407022898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145843597 and 145843606.

It is not an unprimeable number, because it can be changed into a prime (145843673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6629246 + ... + 6629267.

It is an arithmetic number, because the mean of its divisors is an integer number (39775542).

Almost surely, 2^145843643 is an apocalyptic number.

145843643 is a deficient number, since it is larger than the sum of its proper divisors (13258525).

145843643 is a wasteful number, since it uses less digits than its factorization.

145843643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13258524.

The product of its digits is 138240, while the sum is 38.

The square root of 145843643 is about 12076.5741417009. The cubic root of 145843643 is about 526.3757032385.

The spelling of 145843643 in words is "one hundred forty-five million, eight hundred forty-three thousand, six hundred forty-three".