1140533539 has 4 divisors (see below), whose sum is σ = 1200561640. Its totient is φ = 1080505440.

The previous prime is 1140533509. The next prime is 1140533561. The reversal of 1140533539 is 9353350411.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1140533539 - 2⁷ = 1140533411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140533509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30014022 + ... + 30014059.

It is an arithmetic number, because the mean of its divisors is an integer number (300140410).

Almost surely, 2^1140533539 is an apocalyptic number.

1140533539 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1140533539 is a deficient number, since it is larger than the sum of its proper divisors (60028101).

1140533539 is an equidigital number, since it uses as much as digits as its factorization.

1140533539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60028100.

The product of its (nonzero) digits is 24300, while the sum is 34.

The square root of 1140533539 is about 33771.7861387283. The cubic root of 1140533539 is about 1044.8068716608.

It can be divided in two parts, 11405 and 33539, that added together give a palindrome (44944).

The spelling of 1140533539 in words is "one billion, one hundred forty million, five hundred thirty-three thousand, five hundred thirty-nine".