818142630 has 64 divisors (see below), whose sum is σ = 2012525568. Its totient is φ = 212762880.

The previous prime is 818142599. The next prime is 818142653. The reversal of 818142630 is 36241818.

It is a junction number, because it is equal to n+sod(n) for n = 818142591 and 818142600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 465834 + ... + 467586.

It is an arithmetic number, because the mean of its divisors is an integer number (31445712).

Almost surely, 2^818142630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 818142630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1006262784).

818142630 is an abundant number, since it is smaller than the sum of its proper divisors (1194382938).

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

818142630 is a wasteful number, since it uses less digits than its factorization.

818142630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2141.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 818142630 is about 28603.1926539678. The cubic root of 818142630 is about 935.2829288572.

The spelling of 818142630 in words is "eight hundred eighteen million, one hundred forty-two thousand, six hundred thirty".