4638089391 has 32 divisors (see below), whose sum is σ = 6827347968. Its totient is φ = 2782874880.

The previous prime is 4638089387. The next prime is 4638089399. The reversal of 4638089391 is 1939808364.

4638089391 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4638089391 - 2² = 4638089387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4638089399) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 492075 + ... + 501411.

It is an arithmetic number, because the mean of its divisors is an integer number (213354624).

Almost surely, 2^4638089391 is an apocalyptic number.

4638089391 is a deficient number, since it is larger than the sum of its proper divisors (2189258577).

4638089391 is a wasteful number, since it uses less digits than its factorization.

4638089391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9671.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The square root of 4638089391 is about 68103.5196667544. The cubic root of 4638089391 is about 1667.6812203143.

The spelling of 4638089391 in words is "four billion, six hundred thirty-eight million, eighty-nine thousand, three hundred ninety-one".