1609161794 has 16 divisors (see below), whose sum is σ = 2541780000. Its totient is φ = 761935104.

The previous prime is 1609161793. The next prime is 1609161803. The reversal of 1609161794 is 4971619061.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1609161791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112457 + ... + 125955.

It is an arithmetic number, because the mean of its divisors is an integer number (158861250).

Almost surely, 2^1609161794 is an apocalyptic number.

1609161794 is a deficient number, since it is larger than the sum of its proper divisors (932618206).

1609161794 is a wasteful number, since it uses less digits than its factorization.

1609161794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16657.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 1609161794 is about 40114.3589503808. The cubic root of 1609161794 is about 1171.8352850673.

The spelling of 1609161794 in words is "one billion, six hundred nine million, one hundred sixty-one thousand, seven hundred ninety-four".