163799239490 has 8 divisors (see below), whose sum is σ = 294838631100. Its totient is φ = 65519695792.

The previous prime is 163799239481. The next prime is 163799239543. The reversal of 163799239490 is 94932997361.

It can be written as a sum of positive squares in 2 ways, for example, as 163723009129 + 76230361 = 404627^2 + 8731^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8189961965 + ... + 8189961984.

Almost surely, 2^163799239490 is an apocalyptic number.

163799239490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163799239490 is a deficient number, since it is larger than the sum of its proper divisors (131039391610).

163799239490 is a wasteful number, since it uses less digits than its factorization.

163799239490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16379923956.

The product of its (nonzero) digits is 19840464, while the sum is 62.

The spelling of 163799239490 in words is "one hundred sixty-three billion, seven hundred ninety-nine million, two hundred thirty-nine thousand, four hundred ninety".