196473778 has 16 divisors (see below), whose sum is σ = 298011960. Its totient is φ = 97140736.

The previous prime is 196473769. The next prime is 196473793. The reversal of 196473778 is 877374691.

It can be written as a sum of positive squares in 4 ways, for example, as 8427409 + 188046369 = 2903^2 + 13713^2 .

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, 138738 + ... + 140146.

Almost surely, 2^196473778 is an apocalyptic number.

196473778 is a deficient number, since it is larger than the sum of its proper divisors (101538182).

196473778 is a wasteful number, since it uses less digits than its factorization.

196473778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2141.

The product of its digits is 1778112, while the sum is 52.

The square root of 196473778 is about 14016.9104299057. The cubic root of 196473778 is about 581.3462366880.

The spelling of 196473778 in words is "one hundred ninety-six million, four hundred seventy-three thousand, seven hundred seventy-eight".