1609730115 has 48 divisors (see below), whose sum is σ = 3099422880. Its totient is φ = 710492160.

The previous prime is 1609730077. The next prime is 1609730131. The reversal of 1609730115 is 5110379061.

It is a happy number.

It is not a de Polignac number, because 1609730115 - 2⁹ = 1609729603 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16446 + ... + 59075.

It is an arithmetic number, because the mean of its divisors is an integer number (64571310).

Almost surely, 2^1609730115 is an apocalyptic number.

1609730115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1609730115 is a deficient number, since it is larger than the sum of its proper divisors (1489692765).

1609730115 is a wasteful number, since it uses less digits than its factorization.

1609730115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75572 (or 75565 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 1609730115 is about 40121.4420852491. The cubic root of 1609730115 is about 1171.9732244210.

The spelling of 1609730115 in words is "one billion, six hundred nine million, seven hundred thirty thousand, one hundred fifteen".