1157439311 has 8 divisors (see below), whose sum is σ = 1331549184. Its totient is φ = 985519800.

The previous prime is 1157439287. The next prime is 1157439331. The reversal of 1157439311 is 1139347511.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1157439311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157439331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 546455 + ... + 548568.

It is an arithmetic number, because the mean of its divisors is an integer number (166443648).

Almost surely, 2^1157439311 is an apocalyptic number.

1157439311 is a deficient number, since it is larger than the sum of its proper divisors (174109873).

1157439311 is a wasteful number, since it uses less digits than its factorization.

1157439311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095181.

The product of its digits is 11340, while the sum is 35.

The square root of 1157439311 is about 34021.1597538943. The cubic root of 1157439311 is about 1049.9438551990.

The spelling of 1157439311 in words is "one billion, one hundred fifty-seven million, four hundred thirty-nine thousand, three hundred eleven".