1630141 has 2 divisors, whose sum is σ = 1630142. Its totient is φ = 1630140.

The previous prime is 1630133. The next prime is 1630159. The reversal of 1630141 is 1410361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1390041 + 240100 = 1179^2 + 490^2 .

It is an emirp because it is prime and its reverse (1410361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1630141 - 2³ = 1630133 is a prime.

It is an alternating number because its digits alternate between odd and even.

1630141 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1630441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815070 + 815071.

It is an arithmetic number, because the mean of its divisors is an integer number (815071).

2^1630141 is an apocalyptic number.

1630141 is the 808-th centered pentagonal number.

It is an amenable number.

1630141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630141 is an equidigital number, since it uses as much as digits as its factorization.

1630141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1630141 is about 1276.7697521480. The cubic root of 1630141 is about 117.6905855265.

It can be divided in two parts, 1630 and 141, that added together give a palindrome (1771).

The spelling of 1630141 in words is "one million, six hundred thirty thousand, one hundred forty-one".