1144250261 has 16 divisors (see below), whose sum is σ = 1449990528. Its totient is φ = 877003200.

The previous prime is 1144250251. The next prime is 1144250267. The reversal of 1144250261 is 1620524411.

It is a cyclic number.

It is not a de Polignac number, because 1144250261 - 2²² = 1140055957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1144250261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144250267) 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, 117110 + ... + 126503.

It is an arithmetic number, because the mean of its divisors is an integer number (90624408).

Almost surely, 2^1144250261 is an apocalyptic number.

1144250261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1144250261 is a deficient number, since it is larger than the sum of its proper divisors (305740267).

1144250261 is a wasteful number, since it uses less digits than its factorization.

1144250261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243692.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1144250261 is about 33826.7684090573. The cubic root of 1144250261 is about 1045.9405650818.

Adding to 1144250261 its reverse (1620524411), we get a palindrome (2764774672).

The spelling of 1144250261 in words is "one billion, one hundred forty-four million, two hundred fifty thousand, two hundred sixty-one".