2063620391 has 4 divisors (see below), whose sum is σ = 2358423312. Its totient is φ = 1768817472.

The previous prime is 2063620387. The next prime is 2063620393. The reversal of 2063620391 is 1930263602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2063620391 - 2² = 2063620387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2063620393) 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, 147401450 + ... + 147401463.

It is an arithmetic number, because the mean of its divisors is an integer number (589605828).

Almost surely, 2^2063620391 is an apocalyptic number.

2063620391 is a deficient number, since it is larger than the sum of its proper divisors (294802921).

2063620391 is an equidigital number, since it uses as much as digits as its factorization.

2063620391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294802920.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 2063620391 is about 45427.0887356872. The cubic root of 2063620391 is about 1273.1412908497.

Adding to 2063620391 its reverse (1930263602), we get a palindrome (3993883993).

The spelling of 2063620391 in words is "two billion, sixty-three million, six hundred twenty thousand, three hundred ninety-one".