20380963 has 2 divisors, whose sum is σ = 20380964. Its totient is φ = 20380962.

The previous prime is 20380951. The next prime is 20381027. The reversal of 20380963 is 36908302.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20380963 - 2¹³ = 20372771 is a prime.

It is not a weakly prime, because it can be changed into another prime (20380903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10190481 + 10190482.

It is an arithmetic number, because the mean of its divisors is an integer number (10190482).

Almost surely, 2^20380963 is an apocalyptic number.

20380963 is a deficient number, since it is larger than the sum of its proper divisors (1).

20380963 is an equidigital number, since it uses as much as digits as its factorization.

20380963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 20380963 is about 4514.5279930464. The cubic root of 20380963 is about 273.1544207250.

The spelling of 20380963 in words is "twenty million, three hundred eighty thousand, nine hundred sixty-three".