1920623707 has 2 divisors, whose sum is σ = 1920623708. Its totient is φ = 1920623706.

The previous prime is 1920623701. The next prime is 1920623711. The reversal of 1920623707 is 7073260291.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1920623707 is a prime.

It is not a weakly prime, because it can be changed into another prime (1920623701) 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, 960311853 + 960311854.

It is an arithmetic number, because the mean of its divisors is an integer number (960311854).

Almost surely, 2^1920623707 is an apocalyptic number.

1920623707 is a deficient number, since it is larger than the sum of its proper divisors (1).

1920623707 is an equidigital number, since it uses as much as digits as its factorization.

1920623707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 1920623707 is about 43824.9210723762. The cubic root of 1920623707 is about 1243.0275713295.

Adding to 1920623707 its reverse (7073260291), we get a palindrome (8993883998).

The spelling of 1920623707 in words is "one billion, nine hundred twenty million, six hundred twenty-three thousand, seven hundred seven".