7745540946 has 128 divisors (see below), whose sum is σ = 18811699200. Its totient is φ = 2094892800.

The previous prime is 7745540917. The next prime is 7745540947. The reversal of 7745540946 is 6490455477.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (7745540947) 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, 3227455 + ... + 3229853.

It is an arithmetic number, because the mean of its divisors is an integer number (146966400).

Almost surely, 2^7745540946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7745540946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9405849600).

7745540946 is an abundant number, since it is smaller than the sum of its proper divisors (11066158254).

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

7745540946 is a wasteful number, since it uses less digits than its factorization.

7745540946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552.

The product of its (nonzero) digits is 4233600, while the sum is 51.

The square root of 7745540946 is about 88008.7549394945. The cubic root of 7745540946 is about 1978.5661954156.

The spelling of 7745540946 in words is "seven billion, seven hundred forty-five million, five hundred forty thousand, nine hundred forty-six".