141971638 has 16 divisors (see below), whose sum is σ = 218267280. Its totient is φ = 69221376.

The previous prime is 141971623. The next prime is 141971647. The reversal of 141971638 is 836179141.

It is a self number, because there is not a number n which added to its sum of digits gives 141971638.

It is a congruent number.

It is an unprimeable number.

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, 79006 + ... + 80782.

It is an arithmetic number, because the mean of its divisors is an integer number (13641705).

Almost surely, 2^141971638 is an apocalyptic number.

141971638 is a deficient number, since it is larger than the sum of its proper divisors (76295642).

141971638 is a wasteful number, since it uses less digits than its factorization.

141971638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2751.

The product of its digits is 36288, while the sum is 40.

The square root of 141971638 is about 11915.1851853003. The cubic root of 141971638 is about 521.6756081627.

The spelling of 141971638 in words is "one hundred forty-one million, nine hundred seventy-one thousand, six hundred thirty-eight".