100401618 has 16 divisors (see below), whose sum is σ = 201287520. Its totient is φ = 33386496.

The previous prime is 100401617. The next prime is 100401629. The reversal of 100401618 is 816104001.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100401594 and 100401603.

It is not an unprimeable number, because it can be changed into a prime (100401611) 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 7 ways as a sum of consecutive naturals, for example, 17455 + ... + 22482.

It is an arithmetic number, because the mean of its divisors is an integer number (12580470).

Almost surely, 2^100401618 is an apocalyptic number.

100401618 is an abundant number, since it is smaller than the sum of its proper divisors (100885902).

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

100401618 is a wasteful number, since it uses less digits than its factorization.

100401618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40361.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 100401618 is about 10020.0607782588. The cubic root of 100401618 is about 464.7794352266.

Adding to 100401618 its reverse (816104001), we get a palindrome (916505619).

The spelling of 100401618 in words is "one hundred million, four hundred one thousand, six hundred eighteen".