161482819 has 2 divisors, whose sum is σ = 161482820. Its totient is φ = 161482818.

The previous prime is 161482807. The next prime is 161482861. The reversal of 161482819 is 918284161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161482819 - 2¹⁷ = 161351747 is a prime.

It is a super-2 number, since 2×161482819² = 52153401664373522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (161482879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80741409 + 80741410.

It is an arithmetic number, because the mean of its divisors is an integer number (80741410).

Almost surely, 2^161482819 is an apocalyptic number.

161482819 is a deficient number, since it is larger than the sum of its proper divisors (1).

161482819 is an equidigital number, since it uses as much as digits as its factorization.

161482819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 40.

The square root of 161482819 is about 12707.5890317558. The cubic root of 161482819 is about 544.5554481596. Note that the first 3 decimals are identical.

The spelling of 161482819 in words is "one hundred sixty-one million, four hundred eighty-two thousand, eight hundred nineteen".