141893581 has 2 divisors, whose sum is σ = 141893582. Its totient is φ = 141893580.

The previous prime is 141893569. The next prime is 141893621. The reversal of 141893581 is 185398141.

It is a happy number.

It is an a-pointer prime, because the next prime (141893621) can be obtained adding 141893581 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97337956 + 44555625 = 9866^2 + 6675^2 .

It is a cyclic number.

It is not a de Polignac number, because 141893581 - 2¹³ = 141885389 is a prime.

It is a super-2 number, since 2×141893581² = 40267576658007122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (141893551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70946790 + 70946791.

It is an arithmetic number, because the mean of its divisors is an integer number (70946791).

Almost surely, 2^141893581 is an apocalyptic number.

It is an amenable number.

141893581 is a deficient number, since it is larger than the sum of its proper divisors (1).

141893581 is an equidigital number, since it uses as much as digits as its factorization.

141893581 is an evil number, because the sum of its binary digits is even.

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

The square root of 141893581 is about 11911.9092088548. The cubic root of 141893581 is about 521.5799836690.

The spelling of 141893581 in words is "one hundred forty-one million, eight hundred ninety-three thousand, five hundred eighty-one".