854165945 has 4 divisors (see below), whose sum is σ = 1024999140. Its totient is φ = 683332752.

The previous prime is 854165941. The next prime is 854165959. The reversal of 854165945 is 549561458.

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 383102329 + 471063616 = 19573^2 + 21704^2 .

It is a cyclic number.

It is not a de Polignac number, because 854165945 - 2² = 854165941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 854165945.

It is not an unprimeable number, because it can be changed into a prime (854165941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85416590 + ... + 85416599.

It is an arithmetic number, because the mean of its divisors is an integer number (256249785).

Almost surely, 2^854165945 is an apocalyptic number.

It is an amenable number.

854165945 is a deficient number, since it is larger than the sum of its proper divisors (170833195).

854165945 is a wasteful number, since it uses less digits than its factorization.

854165945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170833194.

The product of its digits is 864000, while the sum is 47.

The square root of 854165945 is about 29226.1175149899. The cubic root of 854165945 is about 948.8132716333.

It can be divided in two parts, 854 and 165945, that multiplied together give a triangular number (141717030 = T₁₆₈₃₅).

The spelling of 854165945 in words is "eight hundred fifty-four million, one hundred sixty-five thousand, nine hundred forty-five".