7654985638 has 8 divisors (see below), whose sum is σ = 11878426080. Its totient is φ = 3695510280.

The previous prime is 7654985633. The next prime is 7654985659. The reversal of 7654985638 is 8365894567.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7654985633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65991198 + ... + 65991313.

It is an arithmetic number, because the mean of its divisors is an integer number (1484803260).

Almost surely, 2^7654985638 is an apocalyptic number.

7654985638 is a deficient number, since it is larger than the sum of its proper divisors (4223440442).

7654985638 is a wasteful number, since it uses less digits than its factorization.

7654985638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131982542.

The product of its digits is 43545600, while the sum is 61.

The square root of 7654985638 is about 87492.7747759779. The cubic root of 7654985638 is about 1970.8252907065.

The spelling of 7654985638 in words is "seven billion, six hundred fifty-four million, nine hundred eighty-five thousand, six hundred thirty-eight".