196806451810 has 16 divisors (see below), whose sum is σ = 358519706496. Its totient is φ = 77774115568.

The previous prime is 196806451781. The next prime is 196806451861. The reversal of 196806451810 is 18154608691.

It is a super-2 number, since 2×196806451810² (a number of 23 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, 118557274 + ... + 118558933.

It is an arithmetic number, because the mean of its divisors is an integer number (22407481656).

Almost surely, 2^196806451810 is an apocalyptic number.

196806451810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

196806451810 is a deficient number, since it is larger than the sum of its proper divisors (161713254686).

196806451810 is a wasteful number, since it uses less digits than its factorization.

196806451810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237116297.

The product of its (nonzero) digits is 414720, while the sum is 49.

The spelling of 196806451810 in words is "one hundred ninety-six billion, eight hundred six million, four hundred fifty-one thousand, eight hundred ten".