1140557538 has 8 divisors (see below), whose sum is σ = 2281115088. Its totient is φ = 380185844.

The previous prime is 1140557459. The next prime is 1140557567. The reversal of 1140557538 is 8357550411.

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

1140557538 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1140557496 and 1140557505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95046456 + ... + 95046467.

It is an arithmetic number, because the mean of its divisors is an integer number (285139386).

Almost surely, 2^1140557538 is an apocalyptic number.

1140557538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1140557538 is a wasteful number, since it uses less digits than its factorization.

1140557538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190092928.

The product of its (nonzero) digits is 84000, while the sum is 39.

The square root of 1140557538 is about 33772.1414482410. The cubic root of 1140557538 is about 1044.8141998522.

The spelling of 1140557538 in words is "one billion, one hundred forty million, five hundred fifty-seven thousand, five hundred thirty-eight".