818908142 has 16 divisors (see below), whose sum is σ = 1323867552. Its totient is φ = 377667360.

The previous prime is 818908133. The next prime is 818908157. The reversal of 818908142 is 241809818.

It is a super-2 number, since 2×818908142² = 1341221090067784328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 818908142.

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, 24503 + ... + 47309.

It is an arithmetic number, because the mean of its divisors is an integer number (82741722).

Almost surely, 2^818908142 is an apocalyptic number.

818908142 is a deficient number, since it is larger than the sum of its proper divisors (504959410).

818908142 is a wasteful number, since it uses less digits than its factorization.

818908142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24203.

The product of its (nonzero) digits is 36864, while the sum is 41.

The square root of 818908142 is about 28616.5711083631. The cubic root of 818908142 is about 935.5745435020.

The spelling of 818908142 in words is "eight hundred eighteen million, nine hundred eight thousand, one hundred forty-two".