160840391 has 2 divisors, whose sum is σ = 160840392. Its totient is φ = 160840390.

The previous prime is 160840387. The next prime is 160840441. The reversal of 160840391 is 193048061.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (193048061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 160840391 - 2² = 160840387 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (160840091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80420195 + 80420196.

It is an arithmetic number, because the mean of its divisors is an integer number (80420196).

Almost surely, 2^160840391 is an apocalyptic number.

160840391 is a deficient number, since it is larger than the sum of its proper divisors (1).

160840391 is an equidigital number, since it uses as much as digits as its factorization.

160840391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 160840391 is about 12682.2865052009. The cubic root of 160840391 is about 543.8323524188.

The spelling of 160840391 in words is "one hundred sixty million, eight hundred forty thousand, three hundred ninety-one".