7938281792 has 56 divisors (see below), whose sum is σ = 18073201344. Its totient is φ = 3388833792.

The previous prime is 7938281783. The next prime is 7938281837. The reversal of 7938281792 is 2971828397.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80663 + ... + 149609.

Almost surely, 2^7938281792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7938281792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9036600672).

7938281792 is an abundant number, since it is smaller than the sum of its proper divisors (10134919552).

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

7938281792 is a wasteful number, since it uses less digits than its factorization.

7938281792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69223 (or 69213 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 56.

The square root of 7938281792 is about 89097.0358205030. The cubic root of 7938281792 is about 1994.8435328488.

The spelling of 7938281792 in words is "seven billion, nine hundred thirty-eight million, two hundred eighty-one thousand, seven hundred ninety-two".