17940160491 has 8 divisors (see below), whose sum is σ = 26094778944. Its totient is φ = 10872824520.

The previous prime is 17940160489. The next prime is 17940160499. The reversal of 17940160491 is 19406104971.

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

It is not a de Polignac number, because 17940160491 - 2¹ = 17940160489 is a prime.

It is a super-2 number, since 2×17940160491² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (17940160499) 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, 271820581 + ... + 271820646.

It is an arithmetic number, because the mean of its divisors is an integer number (3261847368).

Almost surely, 2^17940160491 is an apocalyptic number.

17940160491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

17940160491 is a deficient number, since it is larger than the sum of its proper divisors (8154618453).

17940160491 is a wasteful number, since it uses less digits than its factorization.

17940160491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543641241.

The product of its (nonzero) digits is 54432, while the sum is 42.

The spelling of 17940160491 in words is "seventeen billion, nine hundred forty million, one hundred sixty thousand, four hundred ninety-one".