1161110249 has 8 divisors (see below), whose sum is σ = 1250993352. Its totient is φ = 1071308160.

The previous prime is 1161110243. The next prime is 1161110257. The reversal of 1161110249 is 9420111611.

It can be written as a sum of positive squares in 4 ways, for example, as 170119849 + 990990400 = 13043^2 + 31480^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1161110249 - 2⁸ = 1161109993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161110243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11357 + ... + 49509.

It is an arithmetic number, because the mean of its divisors is an integer number (156374169).

Almost surely, 2^1161110249 is an apocalyptic number.

It is an amenable number.

1161110249 is a deficient number, since it is larger than the sum of its proper divisors (89883103).

1161110249 is a wasteful number, since it uses less digits than its factorization.

1161110249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40507.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 1161110249 is about 34075.0678502626. The cubic root of 1161110249 is about 1051.0526854638.

The spelling of 1161110249 in words is "one billion, one hundred sixty-one million, one hundred ten thousand, two hundred forty-nine".