4138990851 has 16 divisors (see below), whose sum is σ = 5651078400. Its totient is φ = 2693639520.

The previous prime is 4138990847. The next prime is 4138990853. The reversal of 4138990851 is 1580998314.

It is not a de Polignac number, because 4138990851 - 2² = 4138990847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4138990851.

It is not an unprimeable number, because it can be changed into a prime (4138990853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33765 + ... + 97046.

It is an arithmetic number, because the mean of its divisors is an integer number (353192400).

Almost surely, 2^4138990851 is an apocalyptic number.

4138990851 is a deficient number, since it is larger than the sum of its proper divisors (1512087549).

4138990851 is a wasteful number, since it uses less digits than its factorization.

4138990851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131066.

The product of its (nonzero) digits is 311040, while the sum is 48.

The square root of 4138990851 is about 64334.9893215193. The cubic root of 4138990851 is about 1605.5782960884.

The spelling of 4138990851 in words is "four billion, one hundred thirty-eight million, nine hundred ninety thousand, eight hundred fifty-one".