1920615313 has 2 divisors, whose sum is σ = 1920615314. Its totient is φ = 1920615312.

The previous prime is 1920615311. The next prime is 1920615331. The reversal of 1920615313 is 3135160291.

It is a happy number.

Together with next prime (1920615331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1302993409 + 617621904 = 36097^2 + 24852^2 .

It is a cyclic number.

It is not a de Polignac number, because 1920615313 - 2¹ = 1920615311 is a prime.

Together with 1920615311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1920615311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 960307656 + 960307657.

It is an arithmetic number, because the mean of its divisors is an integer number (960307657).

Almost surely, 2^1920615313 is an apocalyptic number.

It is an amenable number.

1920615313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1920615313 is an equidigital number, since it uses as much as digits as its factorization.

1920615313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 1920615313 is about 43824.8253048429. The cubic root of 1920615313 is about 1243.0257604614.

The spelling of 1920615313 in words is "one billion, nine hundred twenty million, six hundred fifteen thousand, three hundred thirteen".