7394744081 has 4 divisors (see below), whose sum is σ = 7397999652. Its totient is φ = 7391488512.

The previous prime is 7394744057. The next prime is 7394744089. The reversal of 7394744081 is 1804474937.

It is a happy number.

7394744081 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3221584081 + 4173160000 = 56759^2 + 64600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7394744081 is a prime.

It is a super-2 number, since 2×7394744081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7394744089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1624376 + ... + 1628921.

It is an arithmetic number, because the mean of its divisors is an integer number (1849499913).

Almost surely, 2^7394744081 is an apocalyptic number.

It is an amenable number.

7394744081 is a deficient number, since it is larger than the sum of its proper divisors (3255571).

7394744081 is a wasteful number, since it uses less digits than its factorization.

7394744081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3255570.

The product of its (nonzero) digits is 677376, while the sum is 47.

The square root of 7394744081 is about 85992.6978353395. The cubic root of 7394744081 is about 1948.2336914672.

The spelling of 7394744081 in words is "seven billion, three hundred ninety-four million, seven hundred forty-four thousand, eighty-one".