161854607 has 2 divisors, whose sum is σ = 161854608. Its totient is φ = 161854606.

The previous prime is 161854601. The next prime is 161854631. The reversal of 161854607 is 706458161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161854607 - 2²⁰ = 160806031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161854601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80927303 + 80927304.

It is an arithmetic number, because the mean of its divisors is an integer number (80927304).

Almost surely, 2^161854607 is an apocalyptic number.

161854607 is a deficient number, since it is larger than the sum of its proper divisors (1).

161854607 is an equidigital number, since it uses as much as digits as its factorization.

161854607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 161854607 is about 12722.2092028075. The cubic root of 161854607 is about 544.9730447067.

The spelling of 161854607 in words is "one hundred sixty-one million, eight hundred fifty-four thousand, six hundred seven".