1920208963 has 2 divisors, whose sum is σ = 1920208964. Its totient is φ = 1920208962.

The previous prime is 1920208957. The next prime is 1920209003. The reversal of 1920208963 is 3698020291.

It is a happy number.

It is an a-pointer prime, because the next prime (1920209003) can be obtained adding 1920208963 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1920208963 is a prime.

It is not a weakly prime, because it can be changed into another prime (1920200963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 960104481 + 960104482.

It is an arithmetic number, because the mean of its divisors is an integer number (960104482).

Almost surely, 2^1920208963 is an apocalyptic number.

1920208963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1920208963 is an equidigital number, since it uses as much as digits as its factorization.

1920208963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 1920208963 is about 43820.1889886386. The cubic root of 1920208963 is about 1242.9380907893.

The spelling of 1920208963 in words is "one billion, nine hundred twenty million, two hundred eight thousand, nine hundred sixty-three".