1816899234 has 8 divisors (see below), whose sum is σ = 3633798480. Its totient is φ = 605633076.

The previous prime is 1816899209. The next prime is 1816899239. The reversal of 1816899234 is 4329986181.

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

1816899234 is an admirable number.

It is a super-2 number, since 2×1816899234² = 6602245653019573512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1816899239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151408264 + ... + 151408275.

It is an arithmetic number, because the mean of its divisors is an integer number (454224810).

Almost surely, 2^1816899234 is an apocalyptic number.

1816899234 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1816899234 is a wasteful number, since it uses less digits than its factorization.

1816899234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302816544.

The product of its digits is 746496, while the sum is 51.

The square root of 1816899234 is about 42625.1009852176. The cubic root of 1816899234 is about 1220.2353827834.

The spelling of 1816899234 in words is "one billion, eight hundred sixteen million, eight hundred ninety-nine thousand, two hundred thirty-four".