163857098 has 4 divisors (see below), whose sum is σ = 245785650. Its totient is φ = 81928548.

The previous prime is 163857097. The next prime is 163857107. The reversal of 163857098 is 890758361.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 163660849 + 196249 = 12793^2 + 443^2 .

It is not an unprimeable number, because it can be changed into a prime (163857091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40964273 + ... + 40964276.

Almost surely, 2^163857098 is an apocalyptic number.

163857098 is a deficient number, since it is larger than the sum of its proper divisors (81928552).

163857098 is an equidigital number, since it uses as much as digits as its factorization.

163857098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81928551.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 163857098 is about 12800.6678732010. The cubic root of 163857098 is about 547.2113368895.

The spelling of 163857098 in words is "one hundred sixty-three million, eight hundred fifty-seven thousand, ninety-eight".