7838812678 has 16 divisors (see below), whose sum is σ = 11987734320. Its totient is φ = 3842995936.

The previous prime is 7838812661. The next prime is 7838812687. The reversal of 7838812678 is 8762188387.

It is a happy number.

It is a super-3 number, since 3×7838812678³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148776 + ... + 194452.

It is an arithmetic number, because the mean of its divisors is an integer number (749233395).

Almost surely, 2^7838812678 is an apocalyptic number.

7838812678 is a deficient number, since it is larger than the sum of its proper divisors (4148921642).

7838812678 is a wasteful number, since it uses less digits than its factorization.

7838812678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47351.

The product of its digits is 7225344, while the sum is 58.

The square root of 7838812678 is about 88537.0695132835. The cubic root of 7838812678 is about 1986.4764865633.

The spelling of 7838812678 in words is "seven billion, eight hundred thirty-eight million, eight hundred twelve thousand, six hundred seventy-eight".