18407834117908 has 24 divisors (see below), whose sum is σ = 32321582616960. Its totient is φ = 9173104089120.

The previous prime is 18407834117899. The next prime is 18407834117917. The reversal of 18407834117908 is 80971143870481.

It is an interprime number because it is at equal distance from previous prime (18407834117899) and next prime (18407834117917).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8424610 + ... + 10382182.

It is an arithmetic number, because the mean of its divisors is an integer number (1346732609040).

Almost surely, 2^{18407834117908} is an apocalyptic number.

It is an amenable number.

18407834117908 is a deficient number, since it is larger than the sum of its proper divisors (13913748499052).

18407834117908 is a wasteful number, since it uses less digits than its factorization.

18407834117908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1965447 (or 1965445 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 61.

The spelling of 18407834117908 in words is "eighteen trillion, four hundred seven billion, eight hundred thirty-four million, one hundred seventeen thousand, nine hundred eight".