3630720361 has 4 divisors (see below), whose sum is σ = 3788577792. Its totient is φ = 3472862932.

The previous prime is 3630720329. The next prime is 3630720367. The reversal of 3630720361 is 1630270363.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1630270363 = 1429 ⋅1140847.

It is a cyclic number.

It is not a de Polignac number, because 3630720361 - 2⁵ = 3630720329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3630720367) 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, 78928681 + ... + 78928726.

It is an arithmetic number, because the mean of its divisors is an integer number (947144448).

Almost surely, 2^3630720361 is an apocalyptic number.

It is an amenable number.

3630720361 is a deficient number, since it is larger than the sum of its proper divisors (157857431).

3630720361 is a wasteful number, since it uses less digits than its factorization.

3630720361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157857430.

The product of its (nonzero) digits is 13608, while the sum is 31.

The square root of 3630720361 is about 60255.4591800610. The cubic root of 3630720361 is about 1536.9660231851.

The spelling of 3630720361 in words is "three billion, six hundred thirty million, seven hundred twenty thousand, three hundred sixty-one".