1157430011 has 16 divisors (see below), whose sum is σ = 1249670400. Its totient is φ = 1068445728.

The previous prime is 1157429941. The next prime is 1157430017. The reversal of 1157430011 is 1100347511.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1157430011 - 2²⁶ = 1090321147 is a prime.

It is a super-3 number, since 3×1157430011³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1157430017) 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, 396425 + ... + 399333.

It is an arithmetic number, because the mean of its divisors is an integer number (78104400).

Almost surely, 2^1157430011 is an apocalyptic number.

1157430011 is a deficient number, since it is larger than the sum of its proper divisors (92240389).

1157430011 is a wasteful number, since it uses less digits than its factorization.

1157430011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3458.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 1157430011 is about 34021.0230739759. The cubic root of 1157430011 is about 1049.9410430993.

Adding to 1157430011 its reverse (1100347511), we get a palindrome (2257777522).

The spelling of 1157430011 in words is "one billion, one hundred fifty-seven million, four hundred thirty thousand, eleven".