1816356130 has 32 divisors (see below), whose sum is σ = 3437659440. Its totient is φ = 689982720.

The previous prime is 1816356127. The next prime is 1816356221. The reversal of 1816356130 is 316536181.

It can be written as a sum of positive squares in 8 ways, for example, as 175377049 + 1640979081 = 13243^2 + 40509^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33649 + ... + 69028.

Almost surely, 2^1816356130 is an apocalyptic number.

1816356130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1816356130 is a deficient number, since it is larger than the sum of its proper divisors (1621303310).

1816356130 is a wasteful number, since it uses less digits than its factorization.

1816356130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102774.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 1816356130 is about 42618.7298027522. The cubic root of 1816356130 is about 1220.1137872012.

The spelling of 1816356130 in words is "one billion, eight hundred sixteen million, three hundred fifty-six thousand, one hundred thirty".