1047678678 has 16 divisors (see below), whose sum is σ = 2328174960. Its totient is φ = 349226208.

The previous prime is 1047678661. The next prime is 1047678701. The reversal of 1047678678 is 8768767401.

It is a super-2 number, since 2×1047678678² = 2195261224671655368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 19401457 = 1047678678 / (1 + 0 + 4 + 7 + 6 + 7 + 8 + 6 + 7 + 8).

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, 9700675 + ... + 9700782.

It is an arithmetic number, because the mean of its divisors is an integer number (145510935).

Almost surely, 2^1047678678 is an apocalyptic number.

1047678678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1047678678 is an abundant number, since it is smaller than the sum of its proper divisors (1280496282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1047678678 is a wasteful number, since it uses less digits than its factorization.

1047678678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19401468 (or 19401462 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The square root of 1047678678 is about 32367.8648971476. The cubic root of 1047678678 is about 1015.6467936221.

The spelling of 1047678678 in words is "one billion, forty-seven million, six hundred seventy-eight thousand, six hundred seventy-eight".