18335149240 has 32 divisors (see below), whose sum is σ = 41274078480. Its totient is φ = 7330505472.

The previous prime is 18335149211. The next prime is 18335149241. The reversal of 18335149240 is 4294153381.

It is a happy number.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 18335149193 and 18335149202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18335149241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26709 + ... + 193348.

Almost surely, 2^18335149240 is an apocalyptic number.

18335149240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18335149240 is an abundant number, since it is smaller than the sum of its proper divisors (22938929240).

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

18335149240 is a wasteful number, since it uses less digits than its factorization.

18335149240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222151 (or 222147 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 18335149240 in words is "eighteen billion, three hundred thirty-five million, one hundred forty-nine thousand, two hundred forty".