197090315 has 4 divisors (see below), whose sum is σ = 236508384. Its totient is φ = 157672248.

The previous prime is 197090279. The next prime is 197090353. The reversal of 197090315 is 513090791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 513090791 = 179 ⋅2866429.

It is a cyclic number.

It is not a de Polignac number, because 197090315 - 2¹⁴ = 197073931 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19709027 + ... + 19709036.

It is an arithmetic number, because the mean of its divisors is an integer number (59127096).

Almost surely, 2^197090315 is an apocalyptic number.

197090315 is a deficient number, since it is larger than the sum of its proper divisors (39418069).

197090315 is an equidigital number, since it uses as much as digits as its factorization.

197090315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39418068.

The product of its (nonzero) digits is 8505, while the sum is 35.

The square root of 197090315 is about 14038.8858176139. The cubic root of 197090315 is about 581.9536921466.

The spelling of 197090315 in words is "one hundred ninety-seven million, ninety thousand, three hundred fifteen".