16738861 has 2 divisors, whose sum is σ = 16738862. Its totient is φ = 16738860.

The previous prime is 16738849. The next prime is 16738877. The reversal of 16738861 is 16883761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12916836 + 3822025 = 3594^2 + 1955^2 .

It is a cyclic number.

It is not a de Polignac number, because 16738861 - 2¹⁵ = 16706093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16738801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8369430 + 8369431.

It is an arithmetic number, because the mean of its divisors is an integer number (8369431).

Almost surely, 2^16738861 is an apocalyptic number.

It is an amenable number.

16738861 is a deficient number, since it is larger than the sum of its proper divisors (1).

16738861 is an equidigital number, since it uses as much as digits as its factorization.

16738861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 16738861 is about 4091.3153141746. The cubic root of 16738861 is about 255.8047675302.

The spelling of 16738861 in words is "sixteen million, seven hundred thirty-eight thousand, eight hundred sixty-one".