1000218078 has 16 divisors (see below), whose sum is σ = 2222706960. Its totient is φ = 333406008.

The previous prime is 1000218073. The next prime is 1000218097. The reversal of 1000218078 is 8708120001.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000218073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9261225 + ... + 9261332.

It is an arithmetic number, because the mean of its divisors is an integer number (138919185).

Almost surely, 2^1000218078 is an apocalyptic number.

1000218078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1000218078 is an abundant number, since it is smaller than the sum of its proper divisors (1222488882).

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

1000218078 is a wasteful number, since it uses less digits than its factorization.

1000218078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18522568 (or 18522562 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 1000218078 is about 31626.2245296526. The cubic root of 1000218078 is about 1000.0726873831.

Adding to 1000218078 its reverse (8708120001), we get a palindrome (9708338079).

The spelling of 1000218078 in words is "one billion, two hundred eighteen thousand, seventy-eight".