7894138324 has 12 divisors (see below), whose sum is σ = 13828605364. Its totient is φ = 3943108224.

The previous prime is 7894138267. The next prime is 7894138331. The reversal of 7894138324 is 4238314987.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4949122500 + 2945015824 = 70350^2 + 54268^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 985749 + ... + 993724.

Almost surely, 2^7894138324 is an apocalyptic number.

It is an amenable number.

7894138324 is a deficient number, since it is larger than the sum of its proper divisors (5934467040).

7894138324 is a wasteful number, since it uses less digits than its factorization.

7894138324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980474 (or 1980472 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 49.

The square root of 7894138324 is about 88848.9635505108. The cubic root of 7894138324 is about 1991.1389929221.

The spelling of 7894138324 in words is "seven billion, eight hundred ninety-four million, one hundred thirty-eight thousand, three hundred twenty-four".