160020778 has 8 divisors (see below), whose sum is σ = 240851268. Its totient is φ = 79737024.

The previous prime is 160020761. The next prime is 160020781. The reversal of 160020778 is 877020061.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 158080329 + 1940449 = 12573^2 + 1393^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135951 + ... + 137122.

Almost surely, 2^160020778 is an apocalyptic number.

160020778 is a deficient number, since it is larger than the sum of its proper divisors (80830490).

160020778 is a wasteful number, since it uses less digits than its factorization.

160020778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273368.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 160020778 is about 12649.9319365758. The cubic root of 160020778 is about 542.9070223723.

The spelling of 160020778 in words is "one hundred sixty million, twenty thousand, seven hundred seventy-eight".