7840331494 has 32 divisors (see below), whose sum is σ = 12926407680. Its totient is φ = 3549978432.

The previous prime is 7840331483. The next prime is 7840331497. The reversal of 7840331494 is 4941330487.

It is a super-2 number, since 2×7840331494² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7840331494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7840331497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2299539 + ... + 2302945.

It is an arithmetic number, because the mean of its divisors is an integer number (403950240).

Almost surely, 2^7840331494 is an apocalyptic number.

7840331494 is a deficient number, since it is larger than the sum of its proper divisors (5086076186).

7840331494 is a wasteful number, since it uses less digits than its factorization.

7840331494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6084.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 7840331494 is about 88545.6463864825. The cubic root of 7840331494 is about 1986.6047754405.

The spelling of 7840331494 in words is "seven billion, eight hundred forty million, three hundred thirty-one thousand, four hundred ninety-four".