16738261 has 2 divisors, whose sum is σ = 16738262. Its totient is φ = 16738260.

The previous prime is 16738247. The next prime is 16738277. The reversal of 16738261 is 16283761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15163236 + 1575025 = 3894^2 + 1255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16738261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16738231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8369130 + 8369131.

It is an arithmetic number, because the mean of its divisors is an integer number (8369131).

Almost surely, 2^16738261 is an apocalyptic number.

It is an amenable number.

16738261 is a deficient number, since it is larger than the sum of its proper divisors (1).

16738261 is an equidigital number, since it uses as much as digits as its factorization.

16738261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 34.

The square root of 16738261 is about 4091.2419874654. The cubic root of 16738261 is about 255.8017110758.

It can be divided in two parts, 1673 and 8261, that multiplied together give a triangular number (13820653 = T₅₂₅₇).

The spelling of 16738261 in words is "sixteen million, seven hundred thirty-eight thousand, two hundred sixty-one".