145838643 has 8 divisors (see below), whose sum is σ = 194509056. Its totient is φ = 97197000.

The previous prime is 145838633. The next prime is 145838657. The reversal of 145838643 is 346838541.

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

It is not a de Polignac number, because 145838643 - 2⁵ = 145838611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145838595 and 145838604.

It is not an unprimeable number, because it can be changed into a prime (145838633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11818 + ... + 20768.

It is an arithmetic number, because the mean of its divisors is an integer number (24313632).

Almost surely, 2^145838643 is an apocalyptic number.

145838643 is a deficient number, since it is larger than the sum of its proper divisors (48670413).

145838643 is an equidigital number, since it uses as much as digits as its factorization.

145838643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14385.

The product of its digits is 276480, while the sum is 42.

The square root of 145838643 is about 12076.3671275761. The cubic root of 145838643 is about 526.3696878727.

The spelling of 145838643 in words is "one hundred forty-five million, eight hundred thirty-eight thousand, six hundred forty-three".