105439018 has 32 divisors (see below), whose sum is σ = 171072000. Its totient is φ = 48587760.

The previous prime is 105439013. The next prime is 105439027. The reversal of 105439018 is 810934501.

It is a super-2 number, since 2×105439018² = 22234773033608648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105439013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293523 + ... + 293881.

It is an arithmetic number, because the mean of its divisors is an integer number (5346000).

Almost surely, 2^105439018 is an apocalyptic number.

105439018 is a deficient number, since it is larger than the sum of its proper divisors (65632982).

105439018 is a wasteful number, since it uses less digits than its factorization.

105439018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 105439018 is about 10268.3503056723. The cubic root of 105439018 is about 472.4259925334.

The spelling of 105439018 in words is "one hundred five million, four hundred thirty-nine thousand, eighteen".