181985060764 has 24 divisors (see below), whose sum is σ = 343099749888. Its totient is φ = 83961781440.

The previous prime is 181985060713. The next prime is 181985060771. The reversal of 181985060764 is 467060589181.

It is a congruent number.

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, 511507 + ... + 790954.

It is an arithmetic number, because the mean of its divisors is an integer number (14295822912).

Almost surely, 2^181985060764 is an apocalyptic number.

It is an amenable number.

181985060764 is a deficient number, since it is larger than the sum of its proper divisors (161114689124).

181985060764 is a wasteful number, since it uses less digits than its factorization.

181985060764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305165 (or 1305163 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 55.

The spelling of 181985060764 in words is "one hundred eighty-one billion, nine hundred eighty-five million, sixty thousand, seven hundred sixty-four".