18470401 has 2 divisors, whose sum is σ = 18470402. Its totient is φ = 18470400.

The previous prime is 18470399. The next prime is 18470423. The reversal of 18470401 is 10407481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17472400 + 998001 = 4180^2 + 999^2 .

It is a cyclic number.

It is not a de Polignac number, because 18470401 - 2¹ = 18470399 is a prime.

Together with 18470399, it forms a pair of twin primes.

It is equal to p_1179421 and since 18470401 and 1179421 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (18470801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9235200 + 9235201.

It is an arithmetic number, because the mean of its divisors is an integer number (9235201).

Almost surely, 2^18470401 is an apocalyptic number.

It is an amenable number.

18470401 is a deficient number, since it is larger than the sum of its proper divisors (1).

18470401 is an equidigital number, since it uses as much as digits as its factorization.

18470401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 18470401 is about 4297.7204422810. The cubic root of 18470401 is about 264.3374978428.

Adding to 18470401 its reverse (10407481), we get a palindrome (28877882).

The spelling of 18470401 in words is "eighteen million, four hundred seventy thousand, four hundred one".