4638992142 has 32 divisors (see below), whose sum is σ = 9557679744. Its totient is φ = 1499968800.

The previous prime is 4638992129. The next prime is 4638992143. The reversal of 4638992142 is 2412998364.

It is a junction number, because it is equal to n+sod(n) for n = 4638992091 and 4638992100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4638992143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41917 + ... + 105047.

It is an arithmetic number, because the mean of its divisors is an integer number (298677492).

Almost surely, 2^4638992142 is an apocalyptic number.

4638992142 is an abundant number, since it is smaller than the sum of its proper divisors (4918687602).

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

4638992142 is a wasteful number, since it uses less digits than its factorization.

4638992142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63504.

The product of its digits is 746496, while the sum is 48.

The square root of 4638992142 is about 68110.1471294843. The cubic root of 4638992142 is about 1667.7894116475.

The spelling of 4638992142 in words is "four billion, six hundred thirty-eight million, nine hundred ninety-two thousand, one hundred forty-two".