161461403 has 16 divisors (see below), whose sum is σ = 176311296. Its totient is φ = 147428160.

The previous prime is 161461387. The next prime is 161461439. The reversal of 161461403 is 304164161.

It is not a de Polignac number, because 161461403 - 2⁴ = 161461387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161461483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42500 + ... + 46142.

It is an arithmetic number, because the mean of its divisors is an integer number (11019456).

Almost surely, 2^161461403 is an apocalyptic number.

161461403 is a deficient number, since it is larger than the sum of its proper divisors (14849893).

161461403 is a wasteful number, since it uses less digits than its factorization.

161461403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3754.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 161461403 is about 12706.7463577424. The cubic root of 161461403 is about 544.5313739471.

The spelling of 161461403 in words is "one hundred sixty-one million, four hundred sixty-one thousand, four hundred three".