3620539421 has 2 divisors, whose sum is σ = 3620539422. Its totient is φ = 3620539420.

The previous prime is 3620539393. The next prime is 3620539511. The reversal of 3620539421 is 1249350263.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3355305625 + 265233796 = 57925^2 + 16286^2 .

It is a cyclic number.

It is not a de Polignac number, because 3620539421 - 2¹⁴ = 3620523037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3620539721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1810269710 + 1810269711.

It is an arithmetic number, because the mean of its divisors is an integer number (1810269711).

Almost surely, 2^3620539421 is an apocalyptic number.

It is an amenable number.

3620539421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3620539421 is an equidigital number, since it uses as much as digits as its factorization.

3620539421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 3620539421 is about 60170.9183991735. The cubic root of 3620539421 is about 1535.5280709196.

Adding to 3620539421 its reverse (1249350263), we get a palindrome (4869889684).

The spelling of 3620539421 in words is "three billion, six hundred twenty million, five hundred thirty-nine thousand, four hundred twenty-one".