196732818 has 12 divisors (see below), whose sum is σ = 426254478. Its totient is φ = 65577600.

The previous prime is 196732817. The next prime is 196732819. The reversal of 196732818 is 818237691.

It is an interprime number because it is at equal distance from previous prime (196732817) and next prime (196732819).

It can be written as a sum of positive squares in only one way, i.e., 110187009 + 86545809 = 10497^2 + 9303^2 .

It is a super-2 number, since 2×196732818² = 77407603356442248, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (196732817) 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 5 ways as a sum of consecutive naturals, for example, 5464783 + ... + 5464818.

Almost surely, 2^196732818 is an apocalyptic number.

196732818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

196732818 is an abundant number, since it is smaller than the sum of its proper divisors (229521660).

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

196732818 is a wasteful number, since it uses less digits than its factorization.

196732818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10929609 (or 10929606 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 196732818 is about 14026.1476535790. The cubic root of 196732818 is about 581.6016156275.

The spelling of 196732818 in words is "one hundred ninety-six million, seven hundred thirty-two thousand, eight hundred eighteen".