1155408026 has 8 divisors (see below), whose sum is σ = 1835059860. Its totient is φ = 543721408.

The previous prime is 1155408017. The next prime is 1155408029. The reversal of 1155408026 is 6208045511.

It can be written as a sum of positive squares in 2 ways, for example, as 1139400025 + 16008001 = 33755^2 + 4001^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1155407983 and 1155408001.

It is not an unprimeable number, because it can be changed into a prime (1155408029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16991261 + ... + 16991328.

Almost surely, 2^1155408026 is an apocalyptic number.

1155408026 is a deficient number, since it is larger than the sum of its proper divisors (679651834).

1155408026 is a wasteful number, since it uses less digits than its factorization.

1155408026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33982608.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 1155408026 is about 33991.2933852185. The cubic root of 1155408026 is about 1049.3292847304.

The spelling of 1155408026 in words is "one billion, one hundred fifty-five million, four hundred eight thousand, twenty-six".