845154845 has 4 divisors (see below), whose sum is σ = 1014185820. Its totient is φ = 676123872.

The previous prime is 845154841. The next prime is 845154929. The reversal of 845154845 is 548451548.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 551169529 + 293985316 = 23477^2 + 17146^2 .

It is a cyclic number.

It is not a de Polignac number, because 845154845 - 2² = 845154841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 845154796 and 845154805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845154841) 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 3 ways as a sum of consecutive naturals, for example, 84515480 + ... + 84515489.

It is an arithmetic number, because the mean of its divisors is an integer number (253546455).

Almost surely, 2^845154845 is an apocalyptic number.

It is an amenable number.

845154845 is a deficient number, since it is larger than the sum of its proper divisors (169030975).

845154845 is a wasteful number, since it uses less digits than its factorization.

845154845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169030974.

The product of its digits is 512000, while the sum is 44.

The square root of 845154845 is about 29071.5470004608. The cubic root of 845154845 is about 945.4649392278.

The spelling of 845154845 in words is "eight hundred forty-five million, one hundred fifty-four thousand, eight hundred forty-five".