17945049 has 4 divisors (see below), whose sum is σ = 23926736. Its totient is φ = 11963364.

The previous prime is 17945029. The next prime is 17945069. The reversal of 17945049 is 94054971.

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.

It is an interprime number because it is at equal distance from previous prime (17945029) and next prime (17945069).

It is not a de Polignac number, because 17945049 - 2¹¹ = 17943001 is a prime.

It is a super-2 number, since 2×17945049² = 644049567224802, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 17944998 and 17945016.

It is not an unprimeable number, because it can be changed into a prime (17945029) 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, 2990839 + ... + 2990844.

It is an arithmetic number, because the mean of its divisors is an integer number (5981684).

Almost surely, 2^17945049 is an apocalyptic number.

It is an amenable number.

17945049 is a deficient number, since it is larger than the sum of its proper divisors (5981687).

17945049 is an equidigital number, since it uses as much as digits as its factorization.

17945049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5981686.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 17945049 is about 4236.1596995392. The cubic root of 17945049 is about 261.8071780172.

The spelling of 17945049 in words is "seventeen million, nine hundred forty-five thousand, forty-nine".