18962442009 has 32 divisors (see below), whose sum is σ = 32358563840. Its totient is φ = 10750347216.

The previous prime is 18962442001. The next prime is 18962442017. The reversal of 18962442009 is 90024426981.

18962442009 is a `hidden beast` number, since 18 + 9 + 624 + 4 + 2 + 0 + 0 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (18962442001) and next prime (18962442017).

It is not a de Polignac number, because 18962442009 - 2³ = 18962442001 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18962442001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 370999 + ... + 419004.

It is an arithmetic number, because the mean of its divisors is an integer number (1011205120).

Almost surely, 2^18962442009 is an apocalyptic number.

It is an amenable number.

18962442009 is a deficient number, since it is larger than the sum of its proper divisors (13396121831).

18962442009 is a wasteful number, since it uses less digits than its factorization.

18962442009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790146 (or 790140 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 18962442009 in words is "eighteen billion, nine hundred sixty-two million, four hundred forty-two thousand, nine".