1149543139 has 4 divisors (see below), whose sum is σ = 1160703856. Its totient is φ = 1138382424.

The previous prime is 1149543137. The next prime is 1149543163. The reversal of 1149543139 is 9313459411.

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 1149543139 - 2¹ = 1149543137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1149543137) 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, 5580204 + ... + 5580409.

It is an arithmetic number, because the mean of its divisors is an integer number (290175964).

Almost surely, 2^1149543139 is an apocalyptic number.

1149543139 is a deficient number, since it is larger than the sum of its proper divisors (11160717).

1149543139 is a wasteful number, since it uses less digits than its factorization.

1149543139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11160716.

The product of its digits is 58320, while the sum is 40.

The square root of 1149543139 is about 33904.9131985322. The cubic root of 1149543139 is about 1047.5507961006.

The spelling of 1149543139 in words is "one billion, one hundred forty-nine million, five hundred forty-three thousand, one hundred thirty-nine".