161496403 has 2 divisors, whose sum is σ = 161496404. Its totient is φ = 161496402.

The previous prime is 161496397. The next prime is 161496437. The reversal of 161496403 is 304694161.

It is an a-pointer prime, because the next prime (161496437) can be obtained adding 161496403 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161496403 - 2⁹ = 161495891 is a prime.

It is not a weakly prime, because it can be changed into another prime (161496493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80748201 + 80748202.

It is an arithmetic number, because the mean of its divisors is an integer number (80748202).

Almost surely, 2^161496403 is an apocalyptic number.

161496403 is a deficient number, since it is larger than the sum of its proper divisors (1).

161496403 is an equidigital number, since it uses as much as digits as its factorization.

161496403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 161496403 is about 12708.1235042787. The cubic root of 161496403 is about 544.5707171396.

The spelling of 161496403 in words is "one hundred sixty-one million, four hundred ninety-six thousand, four hundred three".