16745749 has 4 divisors (see below), whose sum is σ = 16856800. Its totient is φ = 16634700.

The previous prime is 16745741. The next prime is 16745761. The reversal of 16745749 is 94754761.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94754761 = 3637 ⋅26053.

It is a cyclic number.

It is not a de Polignac number, because 16745749 - 2³ = 16745741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16745741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55299 + ... + 55600.

It is an arithmetic number, because the mean of its divisors is an integer number (4214200).

Almost surely, 2^16745749 is an apocalyptic number.

It is an amenable number.

16745749 is a deficient number, since it is larger than the sum of its proper divisors (111051).

16745749 is a wasteful number, since it uses less digits than its factorization.

16745749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111050.

The product of its digits is 211680, while the sum is 43.

The square root of 16745749 is about 4092.1570106730. The cubic root of 16745749 is about 255.8398503953.

The spelling of 16745749 in words is "sixteen million, seven hundred forty-five thousand, seven hundred forty-nine".