638076141 has 6 divisors (see below), whose sum is σ = 921665550. Its totient is φ = 425384088.

The previous prime is 638076139. The next prime is 638076149. The reversal of 638076141 is 141670836.

638076141 is a `hidden beast` number, since 6 + 38 + 0 + 7 + 614 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 491908041 + 146168100 = 22179^2 + 12090^2 .

It is not a de Polignac number, because 638076141 - 2¹ = 638076139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 638076096 and 638076105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (638076149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35448666 + ... + 35448683.

It is an arithmetic number, because the mean of its divisors is an integer number (153610925).

Almost surely, 2^638076141 is an apocalyptic number.

It is an amenable number.

638076141 is a deficient number, since it is larger than the sum of its proper divisors (283589409).

638076141 is a wasteful number, since it uses less digits than its factorization.

638076141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70897355 (or 70897352 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 638076141 is about 25260.1690611920. The cubic root of 638076141 is about 860.9095033716.

The spelling of 638076141 in words is "six hundred thirty-eight million, seventy-six thousand, one hundred forty-one".