101638102 has 4 divisors (see below), whose sum is σ = 152457156. Its totient is φ = 50819050.

The previous prime is 101638093. The next prime is 101638109. The reversal of 101638102 is 201836101.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101638109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25409524 + ... + 25409527.

It is an arithmetic number, because the mean of its divisors is an integer number (38114289).

Almost surely, 2^101638102 is an apocalyptic number.

101638102 is a deficient number, since it is larger than the sum of its proper divisors (50819054).

101638102 is an equidigital number, since it uses as much as digits as its factorization.

101638102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50819053.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 101638102 is about 10081.5723972007. The cubic root of 101638102 is about 466.6796342202.

The spelling of 101638102 in words is "one hundred one million, six hundred thirty-eight thousand, one hundred two".