161780467 has 2 divisors, whose sum is σ = 161780468. Its totient is φ = 161780466.

The previous prime is 161780461. The next prime is 161780471. The reversal of 161780467 is 764087161.

161780467 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161780467 is a prime.

It is not a weakly prime, because it can be changed into another prime (161780461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80890233 + 80890234.

It is an arithmetic number, because the mean of its divisors is an integer number (80890234).

Almost surely, 2^161780467 is an apocalyptic number.

161780467 is a deficient number, since it is larger than the sum of its proper divisors (1).

161780467 is an equidigital number, since it uses as much as digits as its factorization.

161780467 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 161780467 is about 12719.2950669446. The cubic root of 161780467 is about 544.8898208943.

The spelling of 161780467 in words is "one hundred sixty-one million, seven hundred eighty thousand, four hundred sixty-seven".