1155345426 has 24 divisors (see below), whose sum is σ = 2634999120. Its totient is φ = 364845816.

The previous prime is 1155345403. The next prime is 1155345431. The reversal of 1155345426 is 6245435511.

1155345426 is a `hidden beast` number, since 115 + 534 + 5 + 4 + 2 + 6 = 666.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1688760 + ... + 1689443.

It is an arithmetic number, because the mean of its divisors is an integer number (109791630).

Almost surely, 2^1155345426 is an apocalyptic number.

1155345426 is an abundant number, since it is smaller than the sum of its proper divisors (1479653694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1155345426 is a wasteful number, since it uses less digits than its factorization.

1155345426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3378230 (or 3378227 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 1155345426 is about 33990.3725487086. The cubic root of 1155345426 is about 1049.3103335034.

The spelling of 1155345426 in words is "one billion, one hundred fifty-five million, three hundred forty-five thousand, four hundred twenty-six".