992890549649 has 2 divisors, whose sum is σ = 992890549650. Its totient is φ = 992890549648.

The previous prime is 992890549643. The next prime is 992890549691. The reversal of 992890549649 is 946945098299.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 989911573249 + 2978976400 = 994943^2 + 54580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-992890549649 is a prime.

It is not a weakly prime, because it can be changed into another prime (992890549643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496445274824 + 496445274825.

It is an arithmetic number, because the mean of its divisors is an integer number (496445274825).

Almost surely, 2^992890549649 is an apocalyptic number.

It is an amenable number.

992890549649 is a deficient number, since it is larger than the sum of its proper divisors (1).

992890549649 is an equidigital number, since it uses as much as digits as its factorization.

992890549649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453496320, while the sum is 74.

The spelling of 992890549649 in words is "nine hundred ninety-two billion, eight hundred ninety million, five hundred forty-nine thousand, six hundred forty-nine".