196919387536 has 15 divisors (see below), whose sum is σ = 381534752491. Its totient is φ = 98458806256.

The previous prime is 196919387521. The next prime is 196919387543. The reversal of 196919387536 is 635783919691.

The square root of 196919387536 is 443756.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1719555 + ... + 1830493.

Almost surely, 2^196919387536 is an apocalyptic number.

196919387536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

196919387536 is the 443756-th square number.

It is an amenable number.

196919387536 is a deficient number, since it is larger than the sum of its proper divisors (184615364955).

196919387536 is an frugal number, since it uses more digits than its factorization.

196919387536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221886 (or 110941 counting only the distinct ones).

The product of its digits is 66134880, while the sum is 67.

The spelling of 196919387536 in words is "one hundred ninety-six billion, nine hundred nineteen million, three hundred eighty-seven thousand, five hundred thirty-six".