18412667492 has 24 divisors (see below), whose sum is σ = 32547800376. Its totient is φ = 9113754368.

The previous prime is 18412667473. The next prime is 18412667519. The reversal of 18412667492 is 29476621481.

It can be written as a sum of positive squares in 4 ways, for example, as 5870011456 + 12542656036 = 76616^2 + 111994^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18412667492.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104138 + ... + 218334.

It is an arithmetic number, because the mean of its divisors is an integer number (1356158349).

Almost surely, 2^18412667492 is an apocalyptic number.

It is an amenable number.

18412667492 is a deficient number, since it is larger than the sum of its proper divisors (14135132884).

18412667492 is a wasteful number, since it uses less digits than its factorization.

18412667492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114607 (or 114605 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 50.

The spelling of 18412667492 in words is "eighteen billion, four hundred twelve million, six hundred sixty-seven thousand, four hundred ninety-two".