141891538 has 4 divisors (see below), whose sum is σ = 212837310. Its totient is φ = 70945768.

The previous prime is 141891521. The next prime is 141891539. The reversal of 141891538 is 835198141.

It is a happy number.

141891538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 99940009 + 41951529 = 9997^2 + 6477^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 141891538.

It is not an unprimeable number, because it can be changed into a prime (141891539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35472883 + ... + 35472886.

Almost surely, 2^141891538 is an apocalyptic number.

141891538 is a deficient number, since it is larger than the sum of its proper divisors (70945772).

141891538 is an equidigital number, since it uses as much as digits as its factorization.

141891538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70945771.

The product of its digits is 34560, while the sum is 40.

The square root of 141891538 is about 11911.8234540309. The cubic root of 141891538 is about 521.5774804009.

The spelling of 141891538 in words is "one hundred forty-one million, eight hundred ninety-one thousand, five hundred thirty-eight".