17949542831 has 8 divisors (see below), whose sum is σ = 19599787728. Its totient is φ = 16302376000.

The previous prime is 17949542813. The next prime is 17949542867. The reversal of 17949542831 is 13824594971.

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

It is a cyclic number.

It is not a de Polignac number, because 17949542831 - 2¹⁴ = 17949526447 is a prime.

It is a super-2 number, since 2×17949542831² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17949542131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 757310 + ... + 780651.

It is an arithmetic number, because the mean of its divisors is an integer number (2449973466).

Almost surely, 2^17949542831 is an apocalyptic number.

17949542831 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

17949542831 is a deficient number, since it is larger than the sum of its proper divisors (1650244897).

17949542831 is a wasteful number, since it uses less digits than its factorization.

17949542831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539033.

The product of its digits is 2177280, while the sum is 53.

The spelling of 17949542831 in words is "seventeen billion, nine hundred forty-nine million, five hundred forty-two thousand, eight hundred thirty-one".