18801147572 has 6 divisors (see below), whose sum is σ = 32902008258. Its totient is φ = 9400573784.

The previous prime is 18801147571. The next prime is 18801147593. The reversal of 18801147572 is 27574110881.

It can be written as a sum of positive squares in only one way, i.e., 13343484196 + 5457663376 = 115514^2 + 73876^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18801147571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2350143443 + ... + 2350143450.

It is an arithmetic number, because the mean of its divisors is an integer number (5483668043).

Almost surely, 2^18801147572 is an apocalyptic number.

It is an amenable number.

18801147572 is a deficient number, since it is larger than the sum of its proper divisors (14100860686).

18801147572 is a wasteful number, since it uses less digits than its factorization.

18801147572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4700286897 (or 4700286895 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 44.

The spelling of 18801147572 in words is "eighteen billion, eight hundred one million, one hundred forty-seven thousand, five hundred seventy-two".