7340640381 has 24 divisors (see below), whose sum is σ = 11199741696. Its totient is φ = 4625752320.

The previous prime is 7340640317. The next prime is 7340640383. The reversal of 7340640381 is 1830460437.

7340640381 is a `hidden beast` number, since 7 + 3 + 4 + 0 + 640 + 3 + 8 + 1 = 666.

7340640381 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7340640381 - 2⁶ = 7340640317 is a prime.

It is a super-2 number, since 2×7340640381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7340640383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 293940 + ... + 317933.

It is an arithmetic number, because the mean of its divisors is an integer number (466655904).

Almost surely, 2^7340640381 is an apocalyptic number.

It is an amenable number.

7340640381 is a deficient number, since it is larger than the sum of its proper divisors (3859101315).

7340640381 is a wasteful number, since it uses less digits than its factorization.

7340640381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611953 (or 611950 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 7340640381 is about 85677.5372019995. The cubic root of 7340640381 is about 1943.4706341041.

The spelling of 7340640381 in words is "seven billion, three hundred forty million, six hundred forty thousand, three hundred eighty-one".