1818245937 has 4 divisors (see below), whose sum is σ = 2424327920. Its totient is φ = 1212163956.

The previous prime is 1818245921. The next prime is 1818245939. The reversal of 1818245937 is 7395428181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1818245937 - 2⁴ = 1818245921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1818245939) 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, 303040987 + ... + 303040992.

It is an arithmetic number, because the mean of its divisors is an integer number (606081980).

Almost surely, 2^1818245937 is an apocalyptic number.

It is an amenable number.

1818245937 is a deficient number, since it is larger than the sum of its proper divisors (606081983).

1818245937 is an equidigital number, since it uses as much as digits as its factorization.

1818245937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606081982.

The product of its digits is 483840, while the sum is 48.

The square root of 1818245937 is about 42640.8951242818. The cubic root of 1818245937 is about 1220.5367916854.

The spelling of 1818245937 in words is "one billion, eight hundred eighteen million, two hundred forty-five thousand, nine hundred thirty-seven".