1161444254 has 16 divisors (see below), whose sum is σ = 1769860800. Its totient is φ = 571537824.

The previous prime is 1161444247. The next prime is 1161444257. The reversal of 1161444254 is 4524441611.

It is a self number, because there is not a number n which added to its sum of digits gives 1161444254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161444257) 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 7 ways as a sum of consecutive naturals, for example, 38492 + ... + 61680.

It is an arithmetic number, because the mean of its divisors is an integer number (110616300).

Almost surely, 2^1161444254 is an apocalyptic number.

1161444254 is a deficient number, since it is larger than the sum of its proper divisors (608416546).

1161444254 is a wasteful number, since it uses less digits than its factorization.

1161444254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23587.

The product of its digits is 15360, while the sum is 32.

The square root of 1161444254 is about 34079.9685152437. The cubic root of 1161444254 is about 1051.1534577479.

Adding to 1161444254 its reverse (4524441611), we get a palindrome (5685885865).

The spelling of 1161444254 in words is "one billion, one hundred sixty-one million, four hundred forty-four thousand, two hundred fifty-four".