163811013 has 8 divisors (see below), whose sum is σ = 218820576. Its totient is φ = 109004400.

The previous prime is 163811009. The next prime is 163811023. The reversal of 163811013 is 310118361.

163811013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 163811013 - 2² = 163811009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163811023) 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, 48843 + ... + 52088.

It is an arithmetic number, because the mean of its divisors is an integer number (27352572).

Almost surely, 2^163811013 is an apocalyptic number.

It is an amenable number.

163811013 is a deficient number, since it is larger than the sum of its proper divisors (55009563).

163811013 is a wasteful number, since it uses less digits than its factorization.

163811013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101475.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 163811013 is about 12798.8676452255. The cubic root of 163811013 is about 547.1600308036.

Adding to 163811013 its reverse (310118361), we get a palindrome (473929374).

The spelling of 163811013 in words is "one hundred sixty-three million, eight hundred eleven thousand, thirteen".