197693494 has 4 divisors (see below), whose sum is σ = 296540244. Its totient is φ = 98846746.

The previous prime is 197693473. The next prime is 197693543. The reversal of 197693494 is 494396791.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49423372 + ... + 49423375.

It is an arithmetic number, because the mean of its divisors is an integer number (74135061).

Almost surely, 2^197693494 is an apocalyptic number.

197693494 is a deficient number, since it is larger than the sum of its proper divisors (98846750).

197693494 is an equidigital number, since it uses as much as digits as its factorization.

197693494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98846749.

The product of its digits is 1469664, while the sum is 52.

The square root of 197693494 is about 14060.3518448153. The cubic root of 197693494 is about 582.5467616435.

The spelling of 197693494 in words is "one hundred ninety-seven million, six hundred ninety-three thousand, four hundred ninety-four".