161003481619 has 2 divisors, whose sum is σ = 161003481620. Its totient is φ = 161003481618.

The previous prime is 161003481601. The next prime is 161003481643. The reversal of 161003481619 is 916184300161.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161003481619 is a prime.

It is a super-2 number, since 2×161003481619² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (161003451619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80501740809 + 80501740810.

It is an arithmetic number, because the mean of its divisors is an integer number (80501740810).

Almost surely, 2^161003481619 is an apocalyptic number.

161003481619 is a deficient number, since it is larger than the sum of its proper divisors (1).

161003481619 is an equidigital number, since it uses as much as digits as its factorization.

161003481619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 40.

The spelling of 161003481619 in words is "one hundred sixty-one billion, three million, four hundred eighty-one thousand, six hundred nineteen".