8019969313 has 2 divisors, whose sum is σ = 8019969314. Its totient is φ = 8019969312.

The previous prime is 8019969311. The next prime is 8019969341. The reversal of 8019969313 is 3139699108.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7933999329 + 85969984 = 89073^2 + 9272^2 .

It is a cyclic number.

It is not a de Polignac number, because 8019969313 - 2¹ = 8019969311 is a prime.

Together with 8019969311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8019969311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4009984656 + 4009984657.

It is an arithmetic number, because the mean of its divisors is an integer number (4009984657).

Almost surely, 2^8019969313 is an apocalyptic number.

It is an amenable number.

8019969313 is a deficient number, since it is larger than the sum of its proper divisors (1).

8019969313 is an equidigital number, since it uses as much as digits as its factorization.

8019969313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 49.

The square root of 8019969313 is about 89554.2813772742. The cubic root of 8019969313 is about 2001.6627267035.

The spelling of 8019969313 in words is "eight billion, nineteen million, nine hundred sixty-nine thousand, three hundred thirteen".