1611065023 has 4 divisors (see below), whose sum is σ = 1611704088. Its totient is φ = 1610425960.

The previous prime is 1611065021. The next prime is 1611065051. The reversal of 1611065023 is 3205601161.

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

It is a cyclic number.

It is not a de Polignac number, because 1611065023 - 2¹ = 1611065021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1611065021) 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, 315736 + ... + 320797.

It is an arithmetic number, because the mean of its divisors is an integer number (402926022).

Almost surely, 2^1611065023 is an apocalyptic number.

1611065023 is a deficient number, since it is larger than the sum of its proper divisors (639065).

1611065023 is an equidigital number, since it uses as much as digits as its factorization.

1611065023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639064.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1611065023 is about 40138.0744804730. The cubic root of 1611065023 is about 1172.2970973811.

Adding to 1611065023 its reverse (3205601161), we get a palindrome (4816666184).

The spelling of 1611065023 in words is "one billion, six hundred eleven million, sixty-five thousand, twenty-three".