2047997849 has 2 divisors, whose sum is σ = 2047997850. Its totient is φ = 2047997848.

The previous prime is 2047997843. The next prime is 2047997971. The reversal of 2047997849 is 9487997402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1203049225 + 844948624 = 34685^2 + 29068^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2047997849 is a prime.

It is not a weakly prime, because it can be changed into another prime (2047997843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1023998924 + 1023998925.

It is an arithmetic number, because the mean of its divisors is an integer number (1023998925).

Almost surely, 2^2047997849 is an apocalyptic number.

It is an amenable number.

2047997849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2047997849 is an equidigital number, since it uses as much as digits as its factorization.

2047997849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9144576, while the sum is 59.

The square root of 2047997849 is about 45254.8102305158. The cubic root of 2047997849 is about 1269.9203969781.

The spelling of 2047997849 in words is "two billion, forty-seven million, nine hundred ninety-seven thousand, eight hundred forty-nine".