1345556889 has 6 divisors (see below), whose sum is σ = 1943582186. Its totient is φ = 897037920.

The previous prime is 1345556887. The next prime is 1345556893. The reversal of 1345556889 is 9886555431.

1345556889 is a `hidden beast` number, since 1 + 3 + 4 + 5 + 556 + 8 + 89 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1345055625 + 501264 = 36675^2 + 708^2 .

It is not a de Polignac number, because 1345556889 - 2¹ = 1345556887 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1345556887) 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 5 ways as a sum of consecutive naturals, for example, 74753152 + ... + 74753169.

Almost surely, 2^1345556889 is an apocalyptic number.

It is an amenable number.

1345556889 is a deficient number, since it is larger than the sum of its proper divisors (598025297).

1345556889 is a wasteful number, since it uses less digits than its factorization.

1345556889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149506327 (or 149506324 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 54.

The square root of 1345556889 is about 36681.8332284525. The cubic root of 1345556889 is about 1103.9956309885.

The spelling of 1345556889 in words is "one billion, three hundred forty-five million, five hundred fifty-six thousand, eight hundred eighty-nine".