16145903 has 4 divisors (see below), whose sum is σ = 17095680. Its totient is φ = 15196128.

The previous prime is 16145893. The next prime is 16145933. The reversal of 16145903 is 30954161.

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 16145903 - 2⁴ = 16145887 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 (16145933) 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, 474863 + ... + 474896.

It is an arithmetic number, because the mean of its divisors is an integer number (4273920).

Almost surely, 2^16145903 is an apocalyptic number.

16145903 is a deficient number, since it is larger than the sum of its proper divisors (949777).

16145903 is an equidigital number, since it uses as much as digits as its factorization.

16145903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949776.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 16145903 is about 4018.1964859872. The cubic root of 16145903 is about 252.7478362618.

It can be divided in two parts, 161 and 45903, that added together give a palindrome (46064).

The spelling of 16145903 in words is "sixteen million, one hundred forty-five thousand, nine hundred three".