16388901 has 18 divisors (see below), whose sum is σ = 25151282. Its totient is φ = 10281600.

The previous prime is 16388893. The next prime is 16388917. The reversal of 16388901 is 10988361.

16388901 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 7568001 + 8820900 = 2751^2 + 2970^2 .

It is not a de Polignac number, because 16388901 - 2³ = 16388893 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16388921) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 550 + ... + 5751.

Almost surely, 2^16388901 is an apocalyptic number.

It is an amenable number.

16388901 is a deficient number, since it is larger than the sum of its proper divisors (8762381).

16388901 is a wasteful number, since it uses less digits than its factorization.

16388901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6341 (or 6321 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 16388901 is about 4048.3207629831. The cubic root of 16388901 is about 254.0094908310.

The spelling of 16388901 in words is "sixteen million, three hundred eighty-eight thousand, nine hundred one".