17930701840 has 40 divisors (see below), whose sum is σ = 42157312920. Its totient is φ = 7091690496.

The previous prime is 17930701807. The next prime is 17930701843. The reversal of 17930701840 is 4810703971.

It can be written as a sum of positive squares in 4 ways, for example, as 184199184 + 17746502656 = 13572^2 + 133216^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 17930701793 and 17930701802.

It is not an unprimeable number, because it can be changed into a prime (17930701843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1252059 + ... + 1266298.

It is an arithmetic number, because the mean of its divisors is an integer number (1053932823).

Almost surely, 2^17930701840 is an apocalyptic number.

17930701840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17930701840 is an abundant number, since it is smaller than the sum of its proper divisors (24226611080).

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

17930701840 is a wasteful number, since it uses less digits than its factorization.

17930701840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2518459 (or 2518453 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The spelling of 17930701840 in words is "seventeen billion, nine hundred thirty million, seven hundred one thousand, eight hundred forty".