16143387 has 24 divisors (see below), whose sum is σ = 24691824. Its totient is φ = 9345024.

The previous prime is 16143383. The next prime is 16143397. The reversal of 16143387 is 78334161.

It is not a de Polignac number, because 16143387 - 2² = 16143383 is a prime.

It is a super-3 number, since 3×16143387³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (16143383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7683 + ... + 9555.

It is an arithmetic number, because the mean of its divisors is an integer number (1028826).

Almost surely, 2^16143387 is an apocalyptic number.

16143387 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

16143387 is a deficient number, since it is larger than the sum of its proper divisors (8548437).

16143387 is a wasteful number, since it uses less digits than its factorization.

16143387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919 (or 1906 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 16143387 is about 4017.8833980095. The cubic root of 16143387 is about 252.7347070985.

The spelling of 16143387 in words is "sixteen million, one hundred forty-three thousand, three hundred eighty-seven".