161122783 has 2 divisors, whose sum is σ = 161122784. Its totient is φ = 161122782.

The previous prime is 161122781. The next prime is 161122799. The reversal of 161122783 is 387221161.

It is a weak prime.

It is an emirp because it is prime and its reverse (387221161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161122783 - 2¹ = 161122781 is a prime.

Together with 161122781, 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 (161122781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80561391 + 80561392.

It is an arithmetic number, because the mean of its divisors is an integer number (80561392).

Almost surely, 2^161122783 is an apocalyptic number.

161122783 is a deficient number, since it is larger than the sum of its proper divisors (1).

161122783 is an equidigital number, since it uses as much as digits as its factorization.

161122783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 31.

The square root of 161122783 is about 12693.4149463413. The cubic root of 161122783 is about 544.1504402537.

The spelling of 161122783 in words is "one hundred sixty-one million, one hundred twenty-two thousand, seven hundred eighty-three".