1630438340361 has 4 divisors (see below), whose sum is σ = 2173917787152. Its totient is φ = 1086958893572.

The previous prime is 1630438340359. The next prime is 1630438340369.

1630438340361 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1630438340361 - 2¹ = 1630438340359 is a prime.

It is a super-2 number, since 2×1630438340361² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1630438340369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271739723391 + ... + 271739723396.

It is an arithmetic number, because the mean of its divisors is an integer number (543479446788).

Almost surely, 2^{1630438340361} is an apocalyptic number.

It is an amenable number.

1630438340361 is a deficient number, since it is larger than the sum of its proper divisors (543479446791).

1630438340361 is an equidigital number, since it uses as much as digits as its factorization.

1630438340361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543479446790.

The product of its (nonzero) digits is 373248, while the sum is 42.

The spelling of 1630438340361 in words is "one trillion, six hundred thirty billion, four hundred thirty-eight million, three hundred forty thousand, three hundred sixty-one".