7922497838 has 8 divisors (see below), whose sum is σ = 11885395032. Its totient is φ = 3960699496.

The previous prime is 7922497829. The next prime is 7922497861. The reversal of 7922497838 is 8387942297.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×7922497838² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256445 + ... + 285672.

It is an arithmetic number, because the mean of its divisors is an integer number (1485674379).

Almost surely, 2^7922497838 is an apocalyptic number.

7922497838 is a deficient number, since it is larger than the sum of its proper divisors (3962897194).

7922497838 is a wasteful number, since it uses less digits than its factorization.

7922497838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549426.

The product of its digits is 12192768, while the sum is 59.

The square root of 7922497838 is about 89008.4144224578. The cubic root of 7922497838 is about 1993.5205173215.

The spelling of 7922497838 in words is "seven billion, nine hundred twenty-two million, four hundred ninety-seven thousand, eight hundred thirty-eight".