1161267260 has 24 divisors (see below), whose sum is σ = 2455034400. Its totient is φ = 461388224.

The previous prime is 1161267199. The next prime is 1161267269. The reversal of 1161267260 is 627621611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161267269) 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, 191864 + ... + 197823.

It is an arithmetic number, because the mean of its divisors is an integer number (102293100).

Almost surely, 2^1161267260 is an apocalyptic number.

1161267260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1161267260 is an abundant number, since it is smaller than the sum of its proper divisors (1293767140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1161267260 is a wasteful number, since it uses less digits than its factorization.

1161267260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389845 (or 389843 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1161267260 is about 34077.3716709490. The cubic root of 1161267260 is about 1051.1000594880.

Adding to 1161267260 its reverse (627621611), we get a palindrome (1788888871).

The spelling of 1161267260 in words is "one billion, one hundred sixty-one million, two hundred sixty-seven thousand, two hundred sixty".