7632769638 has 64 divisors (see below), whose sum is σ = 16883822592. Its totient is φ = 2285677440.

The previous prime is 7632769607. The next prime is 7632769649. The reversal of 7632769638 is 8369672367.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 657795 + ... + 669297.

It is an arithmetic number, because the mean of its divisors is an integer number (263809728).

Almost surely, 2^7632769638 is an apocalyptic number.

7632769638 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7632769638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8441911296).

7632769638 is an abundant number, since it is smaller than the sum of its proper divisors (9251052954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7632769638 is a wasteful number, since it uses less digits than its factorization.

7632769638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11749.

The product of its digits is 13716864, while the sum is 57.

The square root of 7632769638 is about 87365.7234732249. The cubic root of 7632769638 is about 1968.9168926557.

The spelling of 7632769638 in words is "seven billion, six hundred thirty-two million, seven hundred sixty-nine thousand, six hundred thirty-eight".