162561383 has 2 divisors, whose sum is σ = 162561384. Its totient is φ = 162561382.

The previous prime is 162561379. The next prime is 162561407. The reversal of 162561383 is 383165261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 162561383 - 2² = 162561379 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162561083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81280691 + 81280692.

It is an arithmetic number, because the mean of its divisors is an integer number (81280692).

Almost surely, 2^162561383 is an apocalyptic number.

162561383 is a deficient number, since it is larger than the sum of its proper divisors (1).

162561383 is an equidigital number, since it uses as much as digits as its factorization.

162561383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 35.

The square root of 162561383 is about 12749.9561960032. The cubic root of 162561383 is about 545.7651436185.

The spelling of 162561383 in words is "one hundred sixty-two million, five hundred sixty-one thousand, three hundred eighty-three".