3620213381 has 4 divisors (see below), whose sum is σ = 3624037152. Its totient is φ = 3616389612.

The previous prime is 3620213369. The next prime is 3620213383. The reversal of 3620213381 is 1833120263.

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 a de Polignac number, because none of the positive numbers 2^k-3620213381 is a prime.

It is a super-2 number, since 2×3620213381² = 26211889847942902322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3620213383) 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, 1910465 + ... + 1912358.

It is an arithmetic number, because the mean of its divisors is an integer number (906009288).

Almost surely, 2^3620213381 is an apocalyptic number.

It is an amenable number.

3620213381 is a deficient number, since it is larger than the sum of its proper divisors (3823771).

3620213381 is an equidigital number, since it uses as much as digits as its factorization.

3620213381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3823770.

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

The square root of 3620213381 is about 60168.2090559458. The cubic root of 3620213381 is about 1535.4819766278.

The spelling of 3620213381 in words is "three billion, six hundred twenty million, two hundred thirteen thousand, three hundred eighty-one".