5638953858 has 32 divisors (see below), whose sum is σ = 11332951296. Its totient is φ = 1870501248.

The previous prime is 5638953791. The next prime is 5638953863. The reversal of 5638953858 is 8583598365.

It is a super-2 number, since 2×5638953858² = 63595601225306168328, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1100310 + ... + 1105422.

It is an arithmetic number, because the mean of its divisors is an integer number (354154728).

Almost surely, 2^5638953858 is an apocalyptic number.

5638953858 is an abundant number, since it is smaller than the sum of its proper divisors (5693997438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5638953858 is a wasteful number, since it uses less digits than its factorization.

5638953858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5978.

The product of its digits is 31104000, while the sum is 60.

The square root of 5638953858 is about 75092.9680995498. The cubic root of 5638953858 is about 1779.9160270532.

The spelling of 5638953858 in words is "five billion, six hundred thirty-eight million, nine hundred fifty-three thousand, eight hundred fifty-eight".