161041667 has 2 divisors, whose sum is σ = 161041668. Its totient is φ = 161041666.

The previous prime is 161041627. The next prime is 161041687. The reversal of 161041667 is 766140161.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (766140161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161041667 - 2¹² = 161037571 is a prime.

It is not a weakly prime, because it can be changed into another prime (161041627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80520833 + 80520834.

It is an arithmetic number, because the mean of its divisors is an integer number (80520834).

Almost surely, 2^161041667 is an apocalyptic number.

161041667 is a deficient number, since it is larger than the sum of its proper divisors (1).

161041667 is an equidigital number, since it uses as much as digits as its factorization.

161041667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 161041667 is about 12690.2193440460. The cubic root of 161041667 is about 544.0591088364.

It can be divided in two parts, 16104 and 1667, that added together give a palindrome (17771).

The spelling of 161041667 in words is "one hundred sixty-one million, forty-one thousand, six hundred sixty-seven".