601398018 has 72 divisors (see below), whose sum is σ = 1490830068. Its totient is φ = 174140928.

The previous prime is 601397999. The next prime is 601398019. The reversal of 601398018 is 810893106.

601398018 is a `hidden beast` number, since 601 + 39 + 8 + 0 + 18 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 238609809 + 362788209 = 15447^2 + 19047^2 .

It is not an unprimeable number, because it can be changed into a prime (601398019) 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, 63180 + ... + 72072.

Almost surely, 2^601398018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 601398018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (745415034).

601398018 is an abundant number, since it is smaller than the sum of its proper divisors (889432050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

601398018 is a wasteful number, since it uses less digits than its factorization.

601398018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8948 (or 8928 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 601398018 is about 24523.4177471249. The cubic root of 601398018 is about 844.0872316493.

The spelling of 601398018 in words is "six hundred one million, three hundred ninety-eight thousand, eighteen".