7748135934 has 128 divisors (see below), whose sum is σ = 20522668032. Its totient is φ = 1887997440.

The previous prime is 7748135933. The next prime is 7748135953. The reversal of 7748135934 is 4395318477.

It is a happy number.

It is a super-2 number, since 2×7748135934² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7748135933) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2723917 + ... + 2726759.

It is an arithmetic number, because the mean of its divisors is an integer number (160333344).

Almost surely, 2^7748135934 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7748135934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10261334016).

7748135934 is an abundant number, since it is smaller than the sum of its proper divisors (12774532098).

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

7748135934 is a wasteful number, since it uses less digits than its factorization.

7748135934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3230.

The product of its digits is 2540160, while the sum is 51.

The square root of 7748135934 is about 88023.4964881537. The cubic root of 7748135934 is about 1978.7871303720.

The spelling of 7748135934 in words is "seven billion, seven hundred forty-eight million, one hundred thirty-five thousand, nine hundred thirty-four".