1161726423 has 16 divisors (see below), whose sum is σ = 1819767936. Its totient is φ = 649916640.

The previous prime is 1161726413. The next prime is 1161726439. The reversal of 1161726423 is 3246271611.

It is not a de Polignac number, because 1161726423 - 2²⁵ = 1128171991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161726403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1353565 + ... + 1354422.

It is an arithmetic number, because the mean of its divisors is an integer number (113735496).

Almost surely, 2^1161726423 is an apocalyptic number.

1161726423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1161726423 is a deficient number, since it is larger than the sum of its proper divisors (658041513).

1161726423 is a wasteful number, since it uses less digits than its factorization.

1161726423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2708014.

The product of its digits is 12096, while the sum is 33.

The square root of 1161726423 is about 34084.1080710644. The cubic root of 1161726423 is about 1051.2385755952.

The spelling of 1161726423 in words is "one billion, one hundred sixty-one million, seven hundred twenty-six thousand, four hundred twenty-three".