6635801842 has 4 divisors (see below), whose sum is σ = 9953702766. Its totient is φ = 3317900920.

The previous prime is 6635801833. The next prime is 6635801869. The reversal of 6635801842 is 2481085366.

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., 3884904241 + 2750897601 = 62329^2 + 52449^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1658950459 + ... + 1658950462.

Almost surely, 2^6635801842 is an apocalyptic number.

6635801842 is a deficient number, since it is larger than the sum of its proper divisors (3317900924).

6635801842 is a wasteful number, since it uses less digits than its factorization.

6635801842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3317900923.

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 6635801842 is about 81460.4311429789. The cubic root of 6635801842 is about 1879.1630726633.

The spelling of 6635801842 in words is "six billion, six hundred thirty-five million, eight hundred one thousand, eight hundred forty-two".