7938650458 has 4 divisors (see below), whose sum is σ = 11907975690. Its totient is φ = 3969325228.

The previous prime is 7938650449. The next prime is 7938650483. The reversal of 7938650458 is 8540568397.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8540568397 = 76283 ⋅111959.

It can be written as a sum of positive squares in only one way, i.e., 7919754049 + 18896409 = 88993^2 + 4347^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7938650399 and 7938650408.

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, 1984662613 + ... + 1984662616.

Almost surely, 2^7938650458 is an apocalyptic number.

7938650458 is a deficient number, since it is larger than the sum of its proper divisors (3969325232).

7938650458 is a wasteful number, since it uses less digits than its factorization.

7938650458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3969325231.

The product of its (nonzero) digits is 7257600, while the sum is 55.

The square root of 7938650458 is about 89099.1046980832. The cubic root of 7938650458 is about 1994.8744135700.

The spelling of 7938650458 in words is "seven billion, nine hundred thirty-eight million, six hundred fifty thousand, four hundred fifty-eight".