196819745 has 16 divisors (see below), whose sum is σ = 238759488. Its totient is φ = 155749440.

The previous prime is 196819741. The next prime is 196819747. The reversal of 196819745 is 547918691.

It is not a de Polignac number, because 196819745 - 2² = 196819741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 196819693 and 196819702.

It is not an unprimeable number, because it can be changed into a prime (196819741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207362 + ... + 208308.

It is an arithmetic number, because the mean of its divisors is an integer number (14922468).

Almost surely, 2^196819745 is an apocalyptic number.

It is an amenable number.

196819745 is a deficient number, since it is larger than the sum of its proper divisors (41939743).

196819745 is a wasteful number, since it uses less digits than its factorization.

196819745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360.

The product of its digits is 544320, while the sum is 50.

The square root of 196819745 is about 14029.2460595714. The cubic root of 196819745 is about 581.6872638342.

The spelling of 196819745 in words is "one hundred ninety-six million, eight hundred nineteen thousand, seven hundred forty-five".