17916413749 has 8 divisors (see below), whose sum is σ = 19302204600. Its totient is φ = 16531709376.

The previous prime is 17916413743. The next prime is 17916413773. The reversal of 17916413749 is 94731461971.

It can be written as a sum of positive squares in 4 ways, for example, as 6264722500 + 11651691249 = 79150^2 + 107943^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 17916413749 - 2¹⁹ = 17915889461 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 17916413696 and 17916413705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17916413743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237202 + ... + 303475.

It is an arithmetic number, because the mean of its divisors is an integer number (2412775575).

Almost surely, 2^17916413749 is an apocalyptic number.

It is an amenable number.

17916413749 is a deficient number, since it is larger than the sum of its proper divisors (1385790851).

17916413749 is a wasteful number, since it uses less digits than its factorization.

17916413749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543239.

The product of its digits is 1143072, while the sum is 52.

The spelling of 17916413749 in words is "seventeen billion, nine hundred sixteen million, four hundred thirteen thousand, seven hundred forty-nine".