145805803 has 24 divisors (see below), whose sum is σ = 177167088. Its totient is φ = 118296000.

The previous prime is 145805767. The next prime is 145805827. The reversal of 145805803 is 308508541.

145805803 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145805803 - 2¹³ = 145797611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145805843) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136893 + ... + 137953.

It is an arithmetic number, because the mean of its divisors is an integer number (7381962).

Almost surely, 2^145805803 is an apocalyptic number.

145805803 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

145805803 is a deficient number, since it is larger than the sum of its proper divisors (31361285).

145805803 is a wasteful number, since it uses less digits than its factorization.

145805803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147 (or 1116 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 145805803 is about 12075.0073705982. The cubic root of 145805803 is about 526.3301755326.

The spelling of 145805803 in words is "one hundred forty-five million, eight hundred five thousand, eight hundred three".