17973340690 has 16 divisors (see below), whose sum is σ = 32356072728. Its totient is φ = 7188434176.

The previous prime is 17973340663. The next prime is 17973340733. The reversal of 17973340690 is 9604337971.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10575448569 + 7397892121 = 102837^2 + 86011^2 .

It is a super-2 number, since 2×17973340690² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25897 + ... + 191356.

Almost surely, 2^17973340690 is an apocalyptic number.

17973340690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

17973340690 is a deficient number, since it is larger than the sum of its proper divisors (14382732038).

17973340690 is a wasteful number, since it uses less digits than its factorization.

17973340690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225533.

The product of its (nonzero) digits is 857304, while the sum is 49.

The spelling of 17973340690 in words is "seventeen billion, nine hundred seventy-three million, three hundred forty thousand, six hundred ninety".