1632205381 has 2 divisors, whose sum is σ = 1632205382. Its totient is φ = 1632205380.

The previous prime is 1632205339. The next prime is 1632205387. The reversal of 1632205381 is 1835022361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 986588100 + 645617281 = 31410^2 + 25409^2 .

It is an emirp because it is prime and its reverse (1835022361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1632205381 - 2¹¹ = 1632203333 is a prime.

It is a super-2 number, since 2×1632205381² = 5328188811530710322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1632205387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 816102690 + 816102691.

It is an arithmetic number, because the mean of its divisors is an integer number (816102691).

Almost surely, 2^1632205381 is an apocalyptic number.

It is an amenable number.

1632205381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1632205381 is an equidigital number, since it uses as much as digits as its factorization.

1632205381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1632205381 is about 40400.5616421356. The cubic root of 1632205381 is about 1177.4024497751.

The spelling of 1632205381 in words is "one billion, six hundred thirty-two million, two hundred five thousand, three hundred eighty-one".