4038890351849 has 2 divisors, whose sum is σ = 4038890351850. Its totient is φ = 4038890351848.

The previous prime is 4038890351803. The next prime is 4038890351869. The reversal of 4038890351849 is 9481530988304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2127639401449 + 1911250950400 = 1458643^2 + 1382480^2 .

It is a cyclic number.

It is not a de Polignac number, because 4038890351849 - 2³² = 4034595384553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4038890351791 and 4038890351800.

It is not a weakly prime, because it can be changed into another prime (4038890351869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2019445175924 + 2019445175925.

It is an arithmetic number, because the mean of its divisors is an integer number (2019445175925).

Almost surely, 2^{4038890351849} is an apocalyptic number.

It is an amenable number.

4038890351849 is a deficient number, since it is larger than the sum of its proper divisors (1).

4038890351849 is an equidigital number, since it uses as much as digits as its factorization.

4038890351849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29859840, while the sum is 62.

The spelling of 4038890351849 in words is "four trillion, thirty-eight billion, eight hundred ninety million, three hundred fifty-one thousand, eight hundred forty-nine".