163969487 has 8 divisors (see below), whose sum is σ = 188290560. Its totient is φ = 141217560.

The previous prime is 163969483. The next prime is 163969513. The reversal of 163969487 is 784969361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 163969487 - 2² = 163969483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163969483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392063 + ... + 392480.

It is an arithmetic number, because the mean of its divisors is an integer number (23536320).

Almost surely, 2^163969487 is an apocalyptic number.

163969487 is a deficient number, since it is larger than the sum of its proper divisors (24321073).

163969487 is a wasteful number, since it uses less digits than its factorization.

163969487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784573.

The product of its digits is 1959552, while the sum is 53.

The square root of 163969487 is about 12805.0570869481. The cubic root of 163969487 is about 547.3364183986.

The spelling of 163969487 in words is "one hundred sixty-three million, nine hundred sixty-nine thousand, four hundred eighty-seven".