1610944809 has 16 divisors (see below), whose sum is σ = 2237995200. Its totient is φ = 1029462336.

The previous prime is 1610944793. The next prime is 1610944843. The reversal of 1610944809 is 9084490161.

It is not a de Polignac number, because 1610944809 - 2⁴ = 1610944793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1610944879) 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, 54514 + ... + 78699.

It is an arithmetic number, because the mean of its divisors is an integer number (139874700).

Almost surely, 2^1610944809 is an apocalyptic number.

It is an amenable number.

1610944809 is a deficient number, since it is larger than the sum of its proper divisors (627050391).

1610944809 is a wasteful number, since it uses less digits than its factorization.

1610944809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133384.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 1610944809 is about 40136.5769467203. The cubic root of 1610944809 is about 1172.2679386101.

The spelling of 1610944809 in words is "one billion, six hundred ten million, nine hundred forty-four thousand, eight hundred nine".