1155801481 has 12 divisors (see below), whose sum is σ = 1183386672. Its totient is φ = 1128757536.

The previous prime is 1155801469. The next prime is 1155801527. The reversal of 1155801481 is 1841085511.

It is not a de Polignac number, because 1155801481 - 2²³ = 1147412873 is a prime.

It is a super-2 number, since 2×1155801481² = 2671754126963586722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155801401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 569190 + ... + 571216.

It is an arithmetic number, because the mean of its divisors is an integer number (98615556).

Almost surely, 2^1155801481 is an apocalyptic number.

It is an amenable number.

1155801481 is a deficient number, since it is larger than the sum of its proper divisors (27585191).

1155801481 is an equidigital number, since it uses as much as digits as its factorization.

1155801481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2280 (or 2207 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 34.

The square root of 1155801481 is about 33997.0804775940. The cubic root of 1155801481 is about 1049.4483817619.

Adding to 1155801481 its reverse (1841085511), we get a palindrome (2996886992).

The spelling of 1155801481 in words is "one billion, one hundred fifty-five million, eight hundred one thousand, four hundred eighty-one".