853601642 has 4 divisors (see below), whose sum is σ = 1280402466. Its totient is φ = 426800820.

The previous prime is 853601627. The next prime is 853601659. The reversal of 853601642 is 246106358.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246106358 = 2 ⋅123053179.

It can be written as a sum of positive squares in only one way, i.e., 496353841 + 357247801 = 22279^2 + 18901^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213400409 + ... + 213400412.

Almost surely, 2^853601642 is an apocalyptic number.

853601642 is a deficient number, since it is larger than the sum of its proper divisors (426800824).

853601642 is a wasteful number, since it uses less digits than its factorization.

853601642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426800823.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 853601642 is about 29216.4618323301. The cubic root of 853601642 is about 948.6042817488.

The spelling of 853601642 in words is "eight hundred fifty-three million, six hundred one thousand, six hundred forty-two".