1630338401 has 8 divisors (see below), whose sum is σ = 1649953800. Its totient is φ = 1610752000.

The previous prime is 1630338389. The next prime is 1630338407. The reversal of 1630338401 is 1048330361.

It can be written as a sum of positive squares in 4 ways, for example, as 303630625 + 1326707776 = 17425^2 + 36424^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1630338401 - 2¹⁴ = 1630322017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1630338407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118901 + ... + 131901.

It is an arithmetic number, because the mean of its divisors is an integer number (206244225).

Almost surely, 2^1630338401 is an apocalyptic number.

It is an amenable number.

1630338401 is a deficient number, since it is larger than the sum of its proper divisors (19615399).

1630338401 is a wasteful number, since it uses less digits than its factorization.

1630338401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14499.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1630338401 is about 40377.4491641064. The cubic root of 1630338401 is about 1176.9533589299.

Adding to 1630338401 its reverse (1048330361), we get a palindrome (2678668762).

The spelling of 1630338401 in words is "one billion, six hundred thirty million, three hundred thirty-eight thousand, four hundred one".