18067974212 has 6 divisors (see below), whose sum is σ = 31618954878. Its totient is φ = 9033987104.

The previous prime is 18067974193. The next prime is 18067974229. The reversal of 18067974212 is 21247976081.

It can be written as a sum of positive squares in only one way, i.e., 10293319936 + 7774654276 = 101456^2 + 88174^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2258496773 + ... + 2258496780.

It is an arithmetic number, because the mean of its divisors is an integer number (5269825813).

Almost surely, 2^18067974212 is an apocalyptic number.

It is an amenable number.

18067974212 is a deficient number, since it is larger than the sum of its proper divisors (13550980666).

18067974212 is a wasteful number, since it uses less digits than its factorization.

18067974212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4516993557 (or 4516993555 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 47.

The spelling of 18067974212 in words is "eighteen billion, sixty-seven million, nine hundred seventy-four thousand, two hundred twelve".