197561419 has 18 divisors (see below), whose sum is σ = 224517300. Its totient is φ = 173705400.

The previous prime is 197561387. The next prime is 197561431. The reversal of 197561419 is 914165791.

It is a happy number.

197561419 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 197561419 - 2⁵ = 197561387 is a prime.

It is a super-2 number, since 2×197561419² = 78061028554587122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197561459) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 115432 + ... + 117130.

Almost surely, 2^197561419 is an apocalyptic number.

197561419 is a deficient number, since it is larger than the sum of its proper divisors (26955881).

197561419 is a wasteful number, since it uses less digits than its factorization.

197561419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783 (or 1741 counting only the distinct ones).

The product of its digits is 68040, while the sum is 43.

The square root of 197561419 is about 14055.6543426480. The cubic root of 197561419 is about 582.4170035310.

The spelling of 197561419 in words is "one hundred ninety-seven million, five hundred sixty-one thousand, four hundred nineteen".