18483945 has 16 divisors (see below), whose sum is σ = 29634432. Its totient is φ = 9838080.

The previous prime is 18483943. The next prime is 18484003. The reversal of 18483945 is 54938481.

It is not a de Polignac number, because 18483945 - 2¹ = 18483943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18483897 and 18483906.

It is not an unprimeable number, because it can be changed into a prime (18483943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9180 + ... + 11010.

It is an arithmetic number, because the mean of its divisors is an integer number (1852152).

Almost surely, 2^18483945 is an apocalyptic number.

18483945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18483945 is a deficient number, since it is larger than the sum of its proper divisors (11150487).

18483945 is a wasteful number, since it uses less digits than its factorization.

18483945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2512.

The product of its digits is 138240, while the sum is 42.

The square root of 18483945 is about 4299.2958725819. The cubic root of 18483945 is about 264.4020933062.

The spelling of 18483945 in words is "eighteen million, four hundred eighty-three thousand, nine hundred forty-five".