181816842898 has 8 divisors (see below), whose sum is σ = 284582884608. Its totient is φ = 86955881364.

The previous prime is 181816842871. The next prime is 181816842913. The reversal of 181816842898 is 898248618181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×181816842898² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1976269986 + ... + 1976270077.

It is an arithmetic number, because the mean of its divisors is an integer number (35572860576).

Almost surely, 2^181816842898 is an apocalyptic number.

181816842898 is a deficient number, since it is larger than the sum of its proper divisors (102766041710).

181816842898 is a wasteful number, since it uses less digits than its factorization.

181816842898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3952540088.

The product of its digits is 14155776, while the sum is 64.

The spelling of 181816842898 in words is "one hundred eighty-one billion, eight hundred sixteen million, eight hundred forty-two thousand, eight hundred ninety-eight".