1161323274 has 64 divisors (see below), whose sum is σ = 2429184384. Its totient is φ = 369847296.

The previous prime is 1161323257. The next prime is 1161323281. The reversal of 1161323274 is 4723231611.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3710142 + ... + 3710454.

It is an arithmetic number, because the mean of its divisors is an integer number (37956006).

Almost surely, 2^1161323274 is an apocalyptic number.

1161323274 is an abundant number, since it is smaller than the sum of its proper divisors (1267861110).

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

1161323274 is a wasteful number, since it uses less digits than its factorization.

1161323274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631.

The product of its digits is 6048, while the sum is 30.

The square root of 1161323274 is about 34078.1935260659. The cubic root of 1161323274 is about 1051.1169592360.

Adding to 1161323274 its reverse (4723231611), we get a palindrome (5884554885).

The spelling of 1161323274 in words is "one billion, one hundred sixty-one million, three hundred twenty-three thousand, two hundred seventy-four".