851827642 has 8 divisors (see below), whose sum is σ = 1289683296. Its totient is φ = 421933212.

The previous prime is 851827601. The next prime is 851827649. The reversal of 851827642 is 246728158.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×851827642² = 1451220663350560328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (851827649) 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, 1990038 + ... + 1990465.

It is an arithmetic number, because the mean of its divisors is an integer number (161210412).

Almost surely, 2^851827642 is an apocalyptic number.

851827642 is a deficient number, since it is larger than the sum of its proper divisors (437855654).

851827642 is a wasteful number, since it uses less digits than its factorization.

851827642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3980612.

The product of its digits is 215040, while the sum is 43.

The square root of 851827642 is about 29186.0864454281. The cubic root of 851827642 is about 947.9466794831.

The spelling of 851827642 in words is "eight hundred fifty-one million, eight hundred twenty-seven thousand, six hundred forty-two".