163897498 has 4 divisors (see below), whose sum is σ = 245846250. Its totient is φ = 81948748.

The previous prime is 163897463. The next prime is 163897529. The reversal of 163897498 is 894798361.

163897498 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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., 109683729 + 54213769 = 10473^2 + 7363^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40974373 + ... + 40974376.

Almost surely, 2^163897498 is an apocalyptic number.

163897498 is a deficient number, since it is larger than the sum of its proper divisors (81948752).

163897498 is an equidigital number, since it uses as much as digits as its factorization.

163897498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81948751.

The product of its digits is 2612736, while the sum is 55.

The square root of 163897498 is about 12802.2458186054. The cubic root of 163897498 is about 547.2563059950.

The spelling of 163897498 in words is "one hundred sixty-three million, eight hundred ninety-seven thousand, four hundred ninety-eight".