197490453 has 8 divisors (see below), whose sum is σ = 264258816. Its totient is φ = 131191200.

The previous prime is 197490421. The next prime is 197490463. The reversal of 197490453 is 354094791.

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

It is not a de Polignac number, because 197490453 - 2⁵ = 197490421 is a prime.

It is a super-2 number, since 2×197490453² = 78004958052290418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197490463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116293 + ... + 117978.

It is an arithmetic number, because the mean of its divisors is an integer number (33032352).

Almost surely, 2^197490453 is an apocalyptic number.

It is an amenable number.

197490453 is a deficient number, since it is larger than the sum of its proper divisors (66768363).

197490453 is a wasteful number, since it uses less digits than its factorization.

197490453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234555.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 197490453 is about 14053.1296514335. The cubic root of 197490453 is about 582.3472585454.

The spelling of 197490453 in words is "one hundred ninety-seven million, four hundred ninety thousand, four hundred fifty-three".