1818944552 has 16 divisors (see below), whose sum is σ = 3444290100. Its totient is φ = 900467200.

The previous prime is 1818944539. The next prime is 1818944587. The reversal of 1818944552 is 2554498181.

It can be written as a sum of positive squares in 2 ways, for example, as 1318706596 + 500237956 = 36314^2 + 22366^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1818944497 and 1818944506.

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, 1124777 + ... + 1126392.

Almost surely, 2^1818944552 is an apocalyptic number.

It is an amenable number.

1818944552 is a deficient number, since it is larger than the sum of its proper divisors (1625345548).

1818944552 is a wasteful number, since it uses less digits than its factorization.

1818944552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2251276 (or 2251272 counting only the distinct ones).

The product of its digits is 460800, while the sum is 47.

The square root of 1818944552 is about 42649.0861801282. The cubic root of 1818944552 is about 1220.6930917966.

The spelling of 1818944552 in words is "one billion, eight hundred eighteen million, nine hundred forty-four thousand, five hundred fifty-two".