23237844649 has 2 divisors, whose sum is σ = 23237844650. Its totient is φ = 23237844648.

The previous prime is 23237844601. The next prime is 23237844667. The reversal of 23237844649 is 94644873232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18182634649 + 5055210000 = 134843^2 + 71100^2 .

It is a cyclic number.

It is not a de Polignac number, because 23237844649 - 2⁹ = 23237844137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23237844596 and 23237844605.

It is not a weakly prime, because it can be changed into another prime (23237344649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11618922324 + 11618922325.

It is an arithmetic number, because the mean of its divisors is an integer number (11618922325).

Almost surely, 2^23237844649 is an apocalyptic number.

It is an amenable number.

23237844649 is a deficient number, since it is larger than the sum of its proper divisors (1).

23237844649 is an equidigital number, since it uses as much as digits as its factorization.

23237844649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6967296, while the sum is 52.

The spelling of 23237844649 in words is "twenty-three billion, two hundred thirty-seven million, eight hundred forty-four thousand, six hundred forty-nine".