4018545 has 48 divisors (see below), whose sum is σ = 7662720. Its totient is φ = 1997568.

The previous prime is 4018543. The next prime is 4018589. The reversal of 4018545 is 5458104.

It is not a de Polignac number, because 4018545 - 2¹ = 4018543 is a prime.

It is a super-2 number, since 2×4018545² = 32297407834050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (4018541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38964 + ... + 39066.

It is an arithmetic number, because the mean of its divisors is an integer number (159640).

Almost surely, 2^4018545 is an apocalyptic number.

4018545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4018545 is a deficient number, since it is larger than the sum of its proper divisors (3644175).

4018545 is a wasteful number, since it uses less digits than its factorization.

4018545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 4018545 is about 2004.6308887174. The cubic root of 4018545 is about 158.9850466535.

The spelling of 4018545 in words is "four million, eighteen thousand, five hundred forty-five".