16383945 has 16 divisors (see below), whose sum is σ = 26379072. Its totient is φ = 8683200.

The previous prime is 16383931. The next prime is 16383949. The reversal of 16383945 is 54938361.

It is not a de Polignac number, because 16383945 - 2¹³ = 16375753 is a prime.

It is a super-3 number, since 3×16383945³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (16383949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 906 + ... + 5795.

It is an arithmetic number, because the mean of its divisors is an integer number (1648692).

Almost surely, 2^16383945 is an apocalyptic number.

16383945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16383945 is a deficient number, since it is larger than the sum of its proper divisors (9995127).

16383945 is a wasteful number, since it uses less digits than its factorization.

16383945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6872.

The product of its digits is 77760, while the sum is 39.

The square root of 16383945 is about 4047.7086110539. The cubic root of 16383945 is about 253.9838841119.

The spelling of 16383945 in words is "sixteen million, three hundred eighty-three thousand, nine hundred forty-five".