145163983 has 4 divisors (see below), whose sum is σ = 145242720. Its totient is φ = 145085248.

The previous prime is 145163951. The next prime is 145163999. The reversal of 145163983 is 389361541.

145163983 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 389361541 = 13399 ⋅29059.

It is a cyclic number.

It is not a de Polignac number, because 145163983 - 2⁵ = 145163951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145163923) 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, 36535 + ... + 40312.

It is an arithmetic number, because the mean of its divisors is an integer number (36310680).

Almost surely, 2^145163983 is an apocalyptic number.

145163983 is a deficient number, since it is larger than the sum of its proper divisors (78737).

145163983 is an equidigital number, since it uses as much as digits as its factorization.

145163983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78736.

The product of its digits is 77760, while the sum is 40.

The square root of 145163983 is about 12048.4016782310. The cubic root of 145163983 is about 525.5567584085.

The spelling of 145163983 in words is "one hundred forty-five million, one hundred sixty-three thousand, nine hundred eighty-three".