161037911 has 2 divisors, whose sum is σ = 161037912. Its totient is φ = 161037910.

The previous prime is 161037871. The next prime is 161037937. The reversal of 161037911 is 119730161.

It is a strong prime.

It is an emirp because it is prime and its reverse (119730161) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161037911 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161037971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80518955 + 80518956.

It is an arithmetic number, because the mean of its divisors is an integer number (80518956).

Almost surely, 2^161037911 is an apocalyptic number.

161037911 is a deficient number, since it is larger than the sum of its proper divisors (1).

161037911 is an equidigital number, since it uses as much as digits as its factorization.

161037911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 161037911 is about 12690.0713551973. The cubic root of 161037911 is about 544.0548790783.

The spelling of 161037911 in words is "one hundred sixty-one million, thirty-seven thousand, nine hundred eleven".