20892349369 has 2 divisors, whose sum is σ = 20892349370. Its totient is φ = 20892349368.

The previous prime is 20892349351. The next prime is 20892349477. The reversal of 20892349369 is 96394329802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20739456144 + 152893225 = 144012^2 + 12365^2 .

It is a cyclic number.

It is not a de Polignac number, because 20892349369 - 2²⁹ = 20355478457 is a prime.

It is a super-2 number, since 2×20892349369² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20893349369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10446174684 + 10446174685.

It is an arithmetic number, because the mean of its divisors is an integer number (10446174685).

Almost surely, 2^20892349369 is an apocalyptic number.

It is an amenable number.

20892349369 is a deficient number, since it is larger than the sum of its proper divisors (1).

20892349369 is an equidigital number, since it uses as much as digits as its factorization.

20892349369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5038848, while the sum is 55.

The spelling of 20892349369 in words is "twenty billion, eight hundred ninety-two million, three hundred forty-nine thousand, three hundred sixty-nine".