161379847 has 2 divisors, whose sum is σ = 161379848. Its totient is φ = 161379846.

The previous prime is 161379833. The next prime is 161379851. The reversal of 161379847 is 748973161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161379847 - 2¹⁵ = 161347079 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161379797 and 161379806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161379887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80689923 + 80689924.

It is an arithmetic number, because the mean of its divisors is an integer number (80689924).

Almost surely, 2^161379847 is an apocalyptic number.

161379847 is a deficient number, since it is larger than the sum of its proper divisors (1).

161379847 is an equidigital number, since it uses as much as digits as its factorization.

161379847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 46.

The square root of 161379847 is about 12703.5367909886. The cubic root of 161379847 is about 544.4396754993.

The spelling of 161379847 in words is "one hundred sixty-one million, three hundred seventy-nine thousand, eight hundred forty-seven".