1845713161 has 4 divisors (see below), whose sum is σ = 1849976212. Its totient is φ = 1841450112.

The previous prime is 1845713147. The next prime is 1845713179. The reversal of 1845713161 is 1613175481.

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: 1613175481 = 139 ⋅11605579.

It can be written as a sum of positive squares in 2 ways, for example, as 976937536 + 868775625 = 31256^2 + 29475^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1845713161 is a prime.

It is a super-2 number, since 2×1845713161² = 6813314145377223842, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1845713161.

It is not an unprimeable number, because it can be changed into a prime (1845713141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2130876 + ... + 2131741.

It is an arithmetic number, because the mean of its divisors is an integer number (462494053).

Almost surely, 2^1845713161 is an apocalyptic number.

It is an amenable number.

1845713161 is a deficient number, since it is larger than the sum of its proper divisors (4263051).

1845713161 is an equidigital number, since it uses as much as digits as its factorization.

1845713161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4263050.

The product of its digits is 20160, while the sum is 37.

The square root of 1845713161 is about 42961.7639419054. The cubic root of 1845713161 is about 1226.6520896172.

The spelling of 1845713161 in words is "one billion, eight hundred forty-five million, seven hundred thirteen thousand, one hundred sixty-one".