18572153 has 2 divisors, whose sum is σ = 18572154. Its totient is φ = 18572152.

The previous prime is 18572111. The next prime is 18572159. The reversal of 18572153 is 35127581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18550249 + 21904 = 4307^2 + 148^2 .

It is an emirp because it is prime and its reverse (35127581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18572153 - 2⁶ = 18572089 is a prime.

It is not a weakly prime, because it can be changed into another prime (18572159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9286076 + 9286077.

It is an arithmetic number, because the mean of its divisors is an integer number (9286077).

Almost surely, 2^18572153 is an apocalyptic number.

It is an amenable number.

18572153 is a deficient number, since it is larger than the sum of its proper divisors (1).

18572153 is an equidigital number, since it uses as much as digits as its factorization.

18572153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8400, while the sum is 32.

The square root of 18572153 is about 4309.5420870436. The cubic root of 18572153 is about 264.8220141016.

The spelling of 18572153 in words is "eighteen million, five hundred seventy-two thousand, one hundred fifty-three".