7892849938 has 4 divisors (see below), whose sum is σ = 11839274910. Its totient is φ = 3946424968.

The previous prime is 7892849897. The next prime is 7892849969. The reversal of 7892849938 is 8399482987.

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

It can be written as a sum of positive squares in only one way, i.e., 5411514969 + 2481334969 = 73563^2 + 49813^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1973212483 + ... + 1973212486.

Almost surely, 2^7892849938 is an apocalyptic number.

7892849938 is a deficient number, since it is larger than the sum of its proper divisors (3946424972).

7892849938 is a wasteful number, since it uses less digits than its factorization.

7892849938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3946424971.

The product of its digits is 62705664, while the sum is 67.

The square root of 7892849938 is about 88841.7128268023. The cubic root of 7892849938 is about 1991.0306638019.

The spelling of 7892849938 in words is "seven billion, eight hundred ninety-two million, eight hundred forty-nine thousand, nine hundred thirty-eight".