17649450940 has 48 divisors (see below), whose sum is σ = 40442832864. Its totient is φ = 6416467200.

The previous prime is 17649450901. The next prime is 17649450941. The reversal of 17649450940 is 4905494671.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17649450941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1401070 + ... + 1413610.

It is an arithmetic number, because the mean of its divisors is an integer number (842559018).

Almost surely, 2^17649450940 is an apocalyptic number.

17649450940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17649450940 is an abundant number, since it is smaller than the sum of its proper divisors (22793381924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

17649450940 is a wasteful number, since it uses less digits than its factorization.

17649450940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18958 (or 18956 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 17649450940 in words is "seventeen billion, six hundred forty-nine million, four hundred fifty thousand, nine hundred forty".