141656809 has 4 divisors (see below), whose sum is σ = 161893504. Its totient is φ = 121420116.

The previous prime is 141656807. The next prime is 141656813. The reversal of 141656809 is 908656141.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 141656809 - 2¹ = 141656807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (141656803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10118337 + ... + 10118350.

It is an arithmetic number, because the mean of its divisors is an integer number (40473376).

Almost surely, 2^141656809 is an apocalyptic number.

It is an amenable number.

141656809 is a deficient number, since it is larger than the sum of its proper divisors (20236695).

141656809 is an equidigital number, since it uses as much as digits as its factorization.

141656809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20236694.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 141656809 is about 11901.9666022049. The cubic root of 141656809 is about 521.2897091092.

The spelling of 141656809 in words is "one hundred forty-one million, six hundred fifty-six thousand, eight hundred nine".