163135399 has 4 divisors (see below), whose sum is σ = 186440464. Its totient is φ = 139830336.

The previous prime is 163135381. The next prime is 163135439. The reversal of 163135399 is 993531361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 163135399 - 2¹³ = 163127207 is a prime.

It is a super-2 number, since 2×163135399² = 53226316813778402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163135369) 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, 11652522 + ... + 11652535.

It is an arithmetic number, because the mean of its divisors is an integer number (46610116).

Almost surely, 2^163135399 is an apocalyptic number.

163135399 is a deficient number, since it is larger than the sum of its proper divisors (23305065).

163135399 is an equidigital number, since it uses as much as digits as its factorization.

163135399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23305064.

The product of its digits is 65610, while the sum is 40.

The square root of 163135399 is about 12772.4468681612. The cubic root of 163135399 is about 546.4067677339.

It can be divided in two parts, 16313 and 5399, that added together give a palindrome (21712).

The spelling of 163135399 in words is "one hundred sixty-three million, one hundred thirty-five thousand, three hundred ninety-nine".