161411743 has 2 divisors, whose sum is σ = 161411744. Its totient is φ = 161411742.

The previous prime is 161411741. The next prime is 161411759. The reversal of 161411743 is 347114161.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161411743 - 2¹ = 161411741 is a prime.

Together with 161411741, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161411741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80705871 + 80705872.

It is an arithmetic number, because the mean of its divisors is an integer number (80705872).

Almost surely, 2^161411743 is an apocalyptic number.

161411743 is a deficient number, since it is larger than the sum of its proper divisors (1).

161411743 is an equidigital number, since it uses as much as digits as its factorization.

161411743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 28.

The square root of 161411743 is about 12704.7921273825. The cubic root of 161411743 is about 544.4755418198.

The spelling of 161411743 in words is "one hundred sixty-one million, four hundred eleven thousand, seven hundred forty-three".