818840148 has 24 divisors (see below), whose sum is σ = 2183573952. Its totient is φ = 233954304.

The previous prime is 818840137. The next prime is 818840171. The reversal of 818840148 is 841048818.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 4873965 + ... + 4874132.

It is an arithmetic number, because the mean of its divisors is an integer number (90982248).

Almost surely, 2^818840148 is an apocalyptic number.

It is an amenable number.

818840148 is an abundant number, since it is smaller than the sum of its proper divisors (1364733804).

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

818840148 is a wasteful number, since it uses less digits than its factorization.

818840148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9748111 (or 9748109 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 42.

The square root of 818840148 is about 28615.3830657568. The cubic root of 818840148 is about 935.5486491789.

The spelling of 818840148 in words is "eight hundred eighteen million, eight hundred forty thousand, one hundred forty-eight".