1140665358 has 64 divisors (see below), whose sum is σ = 2755215360. Its totient is φ = 307768032.

The previous prime is 1140665353. The next prime is 1140665377. The reversal of 1140665358 is 8535660411.

It is a super-2 number, since 2×1140665358² = 2602234917882536328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140665353) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68841 + ... + 83787.

It is an arithmetic number, because the mean of its divisors is an integer number (43050240).

Almost surely, 2^1140665358 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1140665358, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1377607680).

1140665358 is an abundant number, since it is smaller than the sum of its proper divisors (1614550002).

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

1140665358 is a wasteful number, since it uses less digits than its factorization.

1140665358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15061.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 1140665358 is about 33773.7376966187. The cubic root of 1140665358 is about 1044.8471218556.

The spelling of 1140665358 in words is "one billion, one hundred forty million, six hundred sixty-five thousand, three hundred fifty-eight".