18524943 has 20 divisors (see below), whose sum is σ = 29131960. Its totient is φ = 11698992.

The previous prime is 18524941. The next prime is 18524969. The reversal of 18524943 is 34942581.

It is not a de Polignac number, because 18524943 - 2¹ = 18524941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18524898 and 18524907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18524941) 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 19 ways as a sum of consecutive naturals, for example, 4480 + ... + 7557.

It is an arithmetic number, because the mean of its divisors is an integer number (1456598).

Almost surely, 2^18524943 is an apocalyptic number.

18524943 is a deficient number, since it is larger than the sum of its proper divisors (10607017).

18524943 is a wasteful number, since it uses less digits than its factorization.

18524943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12068 (or 12059 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 18524943 is about 4304.0612216835. The cubic root of 18524943 is about 264.5974331434.

The spelling of 18524943 in words is "eighteen million, five hundred twenty-four thousand, nine hundred forty-three".