1609742395 has 4 divisors (see below), whose sum is σ = 1931690880. Its totient is φ = 1287793912.

The previous prime is 1609742383. The next prime is 1609742413. The reversal of 1609742395 is 5932479061.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5932479061 = 5081 ⋅1167581.

It is a cyclic number.

It is not a de Polignac number, because 1609742395 - 2²⁹ = 1072871483 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160974235 + ... + 160974244.

It is an arithmetic number, because the mean of its divisors is an integer number (482922720).

Almost surely, 2^1609742395 is an apocalyptic number.

1609742395 is a deficient number, since it is larger than the sum of its proper divisors (321948485).

1609742395 is an equidigital number, since it uses as much as digits as its factorization.

1609742395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321948484.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 1609742395 is about 40121.5951203339. The cubic root of 1609742395 is about 1171.9762045882.

The spelling of 1609742395 in words is "one billion, six hundred nine million, seven hundred forty-two thousand, three hundred ninety-five".