197137445 has 16 divisors (see below), whose sum is σ = 250824000. Its totient is φ = 148324608.

The previous prime is 197137441. The next prime is 197137453. The reversal of 197137445 is 544731791.

It is a cyclic number.

It is not a de Polignac number, because 197137445 - 2² = 197137441 is a prime.

It is a super-2 number, since 2×197137445² = 77726344442256050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197137441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5741 + ... + 20669.

It is an arithmetic number, because the mean of its divisors is an integer number (15676500).

Almost surely, 2^197137445 is an apocalyptic number.

It is an amenable number.

197137445 is a deficient number, since it is larger than the sum of its proper divisors (53686555).

197137445 is a wasteful number, since it uses less digits than its factorization.

197137445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15092.

The product of its digits is 105840, while the sum is 41.

The square root of 197137445 is about 14040.5642692878. The cubic root of 197137445 is about 582.0000757746. Note that the first 4 decimals are identical.

The spelling of 197137445 in words is "one hundred ninety-seven million, one hundred thirty-seven thousand, four hundred forty-five".