16380143 has 4 divisors (see below), whose sum is σ = 17640168. Its totient is φ = 15120120.

The previous prime is 16380139. The next prime is 16380149. The reversal of 16380143 is 34108361.

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 16380143 - 2² = 16380139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16380149) 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, 629993 + ... + 630018.

It is an arithmetic number, because the mean of its divisors is an integer number (4410042).

Almost surely, 2^16380143 is an apocalyptic number.

16380143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

16380143 is a deficient number, since it is larger than the sum of its proper divisors (1260025).

16380143 is a wasteful number, since it uses less digits than its factorization.

16380143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260024.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 16380143 is about 4047.2389353731. The cubic root of 16380143 is about 253.9642363931.

The spelling of 16380143 in words is "sixteen million, three hundred eighty thousand, one hundred forty-three".