1161348140 has 12 divisors (see below), whose sum is σ = 2438831136. Its totient is φ = 464539248.

The previous prime is 1161348113. The next prime is 1161348157. The reversal of 1161348140 is 418431611.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29033684 + ... + 29033723.

It is an arithmetic number, because the mean of its divisors is an integer number (203235928).

Almost surely, 2^1161348140 is an apocalyptic number.

1161348140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1161348140 is an abundant number, since it is smaller than the sum of its proper divisors (1277482996).

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

1161348140 is a wasteful number, since it uses less digits than its factorization.

1161348140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58067416 (or 58067414 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 1161348140 is about 34078.5583615270. The cubic root of 1161348140 is about 1051.1244612779.

Adding to 1161348140 its reverse (418431611), we get a palindrome (1579779751).

The spelling of 1161348140 in words is "one billion, one hundred sixty-one million, three hundred forty-eight thousand, one hundred forty".