141981965 has 32 divisors (see below), whose sum is σ = 184913280. Its totient is φ = 104322816.

The previous prime is 141981947. The next prime is 141982019. The reversal of 141981965 is 569189141.

141981965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 141981965 - 2¹⁴ = 141965581 is a prime.

It is a super-2 number, since 2×141981965² = 40317756770522450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 820619 + ... + 820791.

It is an arithmetic number, because the mean of its divisors is an integer number (5778540).

Almost surely, 2^141981965 is an apocalyptic number.

It is an amenable number.

141981965 is a deficient number, since it is larger than the sum of its proper divisors (42931315).

141981965 is a wasteful number, since it uses less digits than its factorization.

With its successor (141981966) it forms an eRAP, since the sums of their prime factors are consecutive (413 and 414).

141981965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413.

The product of its digits is 77760, while the sum is 44.

The square root of 141981965 is about 11915.6185319940. The cubic root of 141981965 is about 521.6882567299.

The spelling of 141981965 in words is "one hundred forty-one million, nine hundred eighty-one thousand, nine hundred sixty-five".