4128992738 has 16 divisors (see below), whose sum is σ = 6703777080. Its totient is φ = 1896013056.

The previous prime is 4128992737. The next prime is 4128992779. The reversal of 4128992738 is 8372998214.

It can be written as a sum of positive squares in 4 ways, for example, as 3951756769 + 177235969 = 62863^2 + 13313^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4128992738.

It is not an unprimeable number, because it can be changed into a prime (4128992737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397943 + ... + 408186.

Almost surely, 2^4128992738 is an apocalyptic number.

4128992738 is a deficient number, since it is larger than the sum of its proper divisors (2574784342).

4128992738 is a wasteful number, since it uses less digits than its factorization.

4128992738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806341.

The product of its digits is 1741824, while the sum is 53.

The square root of 4128992738 is about 64257.2387984420. The cubic root of 4128992738 is about 1604.2844463860.

The spelling of 4128992738 in words is "four billion, one hundred twenty-eight million, nine hundred ninety-two thousand, seven hundred thirty-eight".