163139302 has 4 divisors (see below), whose sum is σ = 244708956. Its totient is φ = 81569650.

The previous prime is 163139281. The next prime is 163139309. The reversal of 163139302 is 203931361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 203931361 = 31 ⋅6578431.

It is a super-2 number, since 2×163139302² = 53228863714094408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163139309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40784824 + ... + 40784827.

It is an arithmetic number, because the mean of its divisors is an integer number (61177239).

Almost surely, 2^163139302 is an apocalyptic number.

163139302 is a deficient number, since it is larger than the sum of its proper divisors (81569654).

163139302 is an equidigital number, since it uses as much as digits as its factorization.

163139302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81569653.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 163139302 is about 12772.5996570784. The cubic root of 163139302 is about 546.4111252770.

The spelling of 163139302 in words is "one hundred sixty-three million, one hundred thirty-nine thousand, three hundred two".