1905272163197 has 8 divisors (see below), whose sum is σ = 2141041628544. Its totient is φ = 1682246993328.

The previous prime is 1905272163181. The next prime is 1905272163233. The reversal of 1905272163197 is 7913612725091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1905272163197 - 2⁴ = 1905272163181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1905272163127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3186073553 + ... + 3186074150.

It is an arithmetic number, because the mean of its divisors is an integer number (267630203568).

Almost surely, 2^{1905272163197} is an apocalyptic number.

It is an amenable number.

1905272163197 is a deficient number, since it is larger than the sum of its proper divisors (235769465347).

1905272163197 is a wasteful number, since it uses less digits than its factorization.

1905272163197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6372147739.

The product of its (nonzero) digits is 1428840, while the sum is 53.

The spelling of 1905272163197 in words is "one trillion, nine hundred five billion, two hundred seventy-two million, one hundred sixty-three thousand, one hundred ninety-seven".