853616378 has 4 divisors (see below), whose sum is σ = 1280424570. Its totient is φ = 426808188.

The previous prime is 853616369. The next prime is 853616389. The reversal of 853616378 is 873616358.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 436517449 + 417098929 = 20893^2 + 20423^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213404093 + ... + 213404096.

Almost surely, 2^853616378 is an apocalyptic number.

853616378 is a deficient number, since it is larger than the sum of its proper divisors (426808192).

853616378 is a wasteful number, since it uses less digits than its factorization.

853616378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426808191.

The product of its digits is 725760, while the sum is 47.

The square root of 853616378 is about 29216.7140178357. The cubic root of 853616378 is about 948.6097404045.

The spelling of 853616378 in words is "eight hundred fifty-three million, six hundred sixteen thousand, three hundred seventy-eight".