1151121439 has 16 divisors (see below), whose sum is σ = 1273410432. Its totient is φ = 1034038368.

The previous prime is 1151121383. The next prime is 1151121443. The reversal of 1151121439 is 9341211511.

It is a cyclic number.

It is not a de Polignac number, because 1151121439 - 2¹¹ = 1151119391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151121239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64332 + ... + 80254.

It is an arithmetic number, because the mean of its divisors is an integer number (79588152).

Almost surely, 2^1151121439 is an apocalyptic number.

1151121439 is a deficient number, since it is larger than the sum of its proper divisors (122288993).

1151121439 is a wasteful number, since it uses less digits than its factorization.

1151121439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16086.

The product of its digits is 1080, while the sum is 28.

The square root of 1151121439 is about 33928.1806025611. The cubic root of 1151121439 is about 1048.0299990320.

The spelling of 1151121439 in words is "one billion, one hundred fifty-one million, one hundred twenty-one thousand, four hundred thirty-nine".