18439247070 has 48 divisors (see below), whose sum is σ = 47967996960. Its totient is φ = 4914470592.

The previous prime is 18439247027. The next prime is 18439247207. The reversal of 18439247070 is 7074293481.

18439247070 is a `hidden beast` number, since 1 + 84 + 39 + 2 + 470 + 70 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114592 + ... + 223628.

It is an arithmetic number, because the mean of its divisors is an integer number (999333270).

Almost surely, 2^18439247070 is an apocalyptic number.

18439247070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18439247070 is an abundant number, since it is smaller than the sum of its proper divisors (29528749890).

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

18439247070 is a wasteful number, since it uses less digits than its factorization.

18439247070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110929 (or 110926 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 18439247070 in words is "eighteen billion, four hundred thirty-nine million, two hundred forty-seven thousand, seventy".