8019723493 has 2 divisors, whose sum is σ = 8019723494. Its totient is φ = 8019723492.

The previous prime is 8019723487. The next prime is 8019723499. The reversal of 8019723493 is 3943279108.

It is a balanced prime because it is at equal distance from previous prime (8019723487) and next prime (8019723499).

It can be written as a sum of positive squares in only one way, i.e., 7415448769 + 604274724 = 86113^2 + 24582^2 .

It is a cyclic number.

It is not a de Polignac number, because 8019723493 - 2⁹ = 8019722981 is a prime.

It is a super-2 number, since 2×8019723493² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8019723499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4009861746 + 4009861747.

It is an arithmetic number, because the mean of its divisors is an integer number (4009861747).

Almost surely, 2^8019723493 is an apocalyptic number.

It is an amenable number.

8019723493 is a deficient number, since it is larger than the sum of its proper divisors (1).

8019723493 is an equidigital number, since it uses as much as digits as its factorization.

8019723493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 8019723493 is about 89552.9089030613. The cubic root of 8019723493 is about 2001.6422755131.

The spelling of 8019723493 in words is "eight billion, nineteen million, seven hundred twenty-three thousand, four hundred ninety-three".