7023391649 has 2 divisors, whose sum is σ = 7023391650. Its totient is φ = 7023391648.

The previous prime is 7023391637. The next prime is 7023391673. The reversal of 7023391649 is 9461933207.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6900292624 + 123099025 = 83068^2 + 11095^2 .

It is a cyclic number.

It is not a de Polignac number, because 7023391649 - 2¹⁶ = 7023326113 is a prime.

It is not a weakly prime, because it can be changed into another prime (7023391049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3511695824 + 3511695825.

It is an arithmetic number, because the mean of its divisors is an integer number (3511695825).

Almost surely, 2^7023391649 is an apocalyptic number.

It is an amenable number.

7023391649 is a deficient number, since it is larger than the sum of its proper divisors (1).

7023391649 is an equidigital number, since it uses as much as digits as its factorization.

7023391649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 7023391649 is about 83805.6779043043. The cubic root of 7023391649 is about 1915.0596048865.

The spelling of 7023391649 in words is "seven billion, twenty-three million, three hundred ninety-one thousand, six hundred forty-nine".