16274749 has 2 divisors, whose sum is σ = 16274750. Its totient is φ = 16274748.

The previous prime is 16274747. The next prime is 16274767. The reversal of 16274749 is 94747261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9566649 + 6708100 = 3093^2 + 2590^2 .

It is a cyclic number.

It is not a de Polignac number, because 16274749 - 2¹ = 16274747 is a prime.

Together with 16274747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16274747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8137374 + 8137375.

It is an arithmetic number, because the mean of its divisors is an integer number (8137375).

Almost surely, 2^16274749 is an apocalyptic number.

It is an amenable number.

16274749 is a deficient number, since it is larger than the sum of its proper divisors (1).

16274749 is an equidigital number, since it uses as much as digits as its factorization.

16274749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 40.

The square root of 16274749 is about 4034.1974418712. The cubic root of 16274749 is about 253.4183738429.

The spelling of 16274749 in words is "sixteen million, two hundred seventy-four thousand, seven hundred forty-nine".