18941261804 has 24 divisors (see below), whose sum is σ = 34913550000. Its totient is φ = 8966583360.

The previous prime is 18941261803. The next prime is 18941261809. The reversal of 18941261804 is 40816214981.

It is not an unprimeable number, because it can be changed into a prime (18941261803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46322 + ... + 200070.

It is an arithmetic number, because the mean of its divisors is an integer number (1454731250).

Almost surely, 2^18941261804 is an apocalyptic number.

It is an amenable number.

18941261804 is a deficient number, since it is larger than the sum of its proper divisors (15972288196).

18941261804 is a wasteful number, since it uses less digits than its factorization.

18941261804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155393 (or 155391 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 44.

The spelling of 18941261804 in words is "eighteen billion, nine hundred forty-one million, two hundred sixty-one thousand, eight hundred four".