1604162243 has 4 divisors (see below), whose sum is σ = 1604484888. Its totient is φ = 1603839600.

The previous prime is 1604162237. The next prime is 1604162249. The reversal of 1604162243 is 3422614061.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1604162237) and next prime (1604162249).

It is a cyclic number.

It is not a de Polignac number, because 1604162243 - 2²⁴ = 1587385027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1604162249) 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, 153746 + ... + 163847.

It is an arithmetic number, because the mean of its divisors is an integer number (401121222).

Almost surely, 2^1604162243 is an apocalyptic number.

1604162243 is a deficient number, since it is larger than the sum of its proper divisors (322645).

1604162243 is an equidigital number, since it uses as much as digits as its factorization.

1604162243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322644.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 1604162243 is about 40051.9942449811. The cubic root of 1604162243 is about 1170.6204231317.

The spelling of 1604162243 in words is "one billion, six hundred four million, one hundred sixty-two thousand, two hundred forty-three".