197495738 has 16 divisors (see below), whose sum is σ = 324535680. Its totient is φ = 89392800.

The previous prime is 197495723. The next prime is 197495743. The reversal of 197495738 is 837594791.

It is a self number, because there is not a number n which added to its sum of digits gives 197495738.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13523 + ... + 24038.

It is an arithmetic number, because the mean of its divisors is an integer number (20283480).

Almost surely, 2^197495738 is an apocalyptic number.

197495738 is a deficient number, since it is larger than the sum of its proper divisors (127039942).

197495738 is a wasteful number, since it uses less digits than its factorization.

197495738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37813.

The product of its digits is 1905120, while the sum is 53.

The square root of 197495738 is about 14053.3176865821. The cubic root of 197495738 is about 582.3524531894.

The spelling of 197495738 in words is "one hundred ninety-seven million, four hundred ninety-five thousand, seven hundred thirty-eight".