18443061 has 36 divisors (see below), whose sum is σ = 33383532. Its totient is φ = 9725184.

The previous prime is 18443059. The next prime is 18443063. The reversal of 18443061 is 16034481.

It is an interprime number because it is at equal distance from previous prime (18443059) and next prime (18443063).

It can be written as a sum of positive squares in 2 ways, for example, as 9922500 + 8520561 = 3150^2 + 2919^2 .

It is not a de Polignac number, because 18443061 - 2¹ = 18443059 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18443063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4125 + ... + 7341.

Almost surely, 2^18443061 is an apocalyptic number.

It is an amenable number.

18443061 is a deficient number, since it is larger than the sum of its proper divisors (14940471).

18443061 is a wasteful number, since it uses less digits than its factorization.

18443061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3250 (or 3240 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 18443061 is about 4294.5385083848. The cubic root of 18443061 is about 264.2070087802.

The spelling of 18443061 in words is "eighteen million, four hundred forty-three thousand, sixty-one".