1969775146 has 8 divisors (see below), whose sum is σ = 2961715680. Its totient is φ = 982536588.

The previous prime is 1969775141. The next prime is 1969775167. The reversal of 1969775146 is 6415779691.

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

It is not an unprimeable number, because it can be changed into a prime (1969775141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1174446 + ... + 1176121.

It is an arithmetic number, because the mean of its divisors is an integer number (370214460).

Almost surely, 2^1969775146 is an apocalyptic number.

1969775146 is a deficient number, since it is larger than the sum of its proper divisors (991940534).

1969775146 is a wasteful number, since it uses less digits than its factorization.

1969775146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2350988.

The product of its digits is 2857680, while the sum is 55.

The square root of 1969775146 is about 44382.1489565343. The cubic root of 1969775146 is about 1253.5419851399.

The spelling of 1969775146 in words is "one billion, nine hundred sixty-nine million, seven hundred seventy-five thousand, one hundred forty-six".