163870413 has 8 divisors (see below), whose sum is σ = 249707328. Its totient is φ = 93640224.

The previous prime is 163870397. The next prime is 163870451. The reversal of 163870413 is 314078361.

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

It is not a de Polignac number, because 163870413 - 2⁴ = 163870397 is a prime.

It is a super-4 number, since 4×163870413⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163870613) 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, 3901656 + ... + 3901697.

It is an arithmetic number, because the mean of its divisors is an integer number (31213416).

Almost surely, 2^163870413 is an apocalyptic number.

It is an amenable number.

163870413 is a deficient number, since it is larger than the sum of its proper divisors (85836915).

163870413 is an equidigital number, since it uses as much as digits as its factorization.

163870413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7803363.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 163870413 is about 12801.1879526863. The cubic root of 163870413 is about 547.2261585882.

The spelling of 163870413 in words is "one hundred sixty-three million, eight hundred seventy thousand, four hundred thirteen".