1157583081 has 4 divisors (see below), whose sum is σ = 1543444112. Its totient is φ = 771722052.

The previous prime is 1157583079. The next prime is 1157583083. The reversal of 1157583081 is 1803857511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1157583079) and next prime (1157583083).

It is not a de Polignac number, because 1157583081 - 2¹ = 1157583079 is a prime.

It is a super-2 number, since 2×1157583081² = 2679997178834905122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1157583083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192930511 + ... + 192930516.

It is an arithmetic number, because the mean of its divisors is an integer number (385861028).

Almost surely, 2^1157583081 is an apocalyptic number.

It is an amenable number.

1157583081 is a deficient number, since it is larger than the sum of its proper divisors (385861031).

1157583081 is an equidigital number, since it uses as much as digits as its factorization.

1157583081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385861030.

The product of its (nonzero) digits is 33600, while the sum is 39.

The square root of 1157583081 is about 34023.2726380047. The cubic root of 1157583081 is about 1049.9873259241.

The spelling of 1157583081 in words is "one billion, one hundred fifty-seven million, five hundred eighty-three thousand, eighty-one".