145947863 has 4 divisors (see below), whose sum is σ = 146486688. Its totient is φ = 145409040.

The previous prime is 145947859. The next prime is 145947871. The reversal of 145947863 is 368749541.

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 145947863 - 2² = 145947859 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 (145947803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269006 + ... + 269547.

It is an arithmetic number, because the mean of its divisors is an integer number (36621672).

Almost surely, 2^145947863 is an apocalyptic number.

145947863 is a deficient number, since it is larger than the sum of its proper divisors (538825).

145947863 is an equidigital number, since it uses as much as digits as its factorization.

145947863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538824.

The product of its digits is 725760, while the sum is 47.

The square root of 145947863 is about 12080.8883365421. Note that the first 3 decimals coincide. The cubic root of 145947863 is about 526.5010562363.

It can be divided in two parts, 1459478 and 63, that added together give a palindrome (1459541).

The spelling of 145947863 in words is "one hundred forty-five million, nine hundred forty-seven thousand, eight hundred sixty-three".