161475619 has 2 divisors, whose sum is σ = 161475620. Its totient is φ = 161475618.

The previous prime is 161475607. The next prime is 161475631. The reversal of 161475619 is 916574161.

It is a balanced prime because it is at equal distance from previous prime (161475607) and next prime (161475631).

It is an emirp because it is prime and its reverse (916574161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161475619 - 2⁷ = 161475491 is a prime.

It is a super-2 number, since 2×161475619² = 52148751062866322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (161475649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80737809 + 80737810.

It is an arithmetic number, because the mean of its divisors is an integer number (80737810).

Almost surely, 2^161475619 is an apocalyptic number.

161475619 is a deficient number, since it is larger than the sum of its proper divisors (1).

161475619 is an equidigital number, since it uses as much as digits as its factorization.

161475619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 40.

The square root of 161475619 is about 12707.3057333174. The cubic root of 161475619 is about 544.5473547134.

The spelling of 161475619 in words is "one hundred sixty-one million, four hundred seventy-five thousand, six hundred nineteen".