163140847 has 4 divisors (see below), whose sum is σ = 163166920. Its totient is φ = 163114776.

The previous prime is 163140811. The next prime is 163140871. The reversal of 163140847 is 748041361.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 748041361 = 17 ⋅44002433.

It is a 3-Lehmer number, since φ(163140847) divides (163140847-1)³.

It is a cyclic number.

It is not a de Polignac number, because 163140847 - 2²⁷ = 28923119 is a prime.

It is a super-2 number, since 2×163140847² = 53229871919754818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163140947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2608 + ... + 18250.

It is an arithmetic number, because the mean of its divisors is an integer number (40791730).

Almost surely, 2^163140847 is an apocalyptic number.

163140847 is the 10429-th pentagonal number.

163140847 is a deficient number, since it is larger than the sum of its proper divisors (26073).

163140847 is a wasteful number, since it uses less digits than its factorization.

163140847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26072.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 163140847 is about 12772.6601379666. The cubic root of 163140847 is about 546.4128501884.

The spelling of 163140847 in words is "one hundred sixty-three million, one hundred forty thousand, eight hundred forty-seven".