16738121 has 2 divisors, whose sum is σ = 16738122. Its totient is φ = 16738120.

The previous prime is 16738103. The next prime is 16738147. The reversal of 16738121 is 12183761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16605625 + 132496 = 4075^2 + 364^2 .

It is a cyclic number.

It is not a de Polignac number, because 16738121 - 2¹⁴ = 16721737 is a prime.

It is a super-2 number, since 2×16738121² = 560329389221282, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16738921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8369060 + 8369061.

It is an arithmetic number, because the mean of its divisors is an integer number (8369061).

Almost surely, 2^16738121 is an apocalyptic number.

It is an amenable number.

16738121 is a deficient number, since it is larger than the sum of its proper divisors (1).

16738121 is an equidigital number, since it uses as much as digits as its factorization.

16738121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 29.

The square root of 16738121 is about 4091.2248777108. The cubic root of 16738121 is about 255.8009978926.

The spelling of 16738121 in words is "sixteen million, seven hundred thirty-eight thousand, one hundred twenty-one".