7840049101 has 2 divisors, whose sum is σ = 7840049102. Its totient is φ = 7840049100.

The previous prime is 7840049099. The next prime is 7840049201. The reversal of 7840049101 is 1019400487.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7809963876 + 30085225 = 88374^2 + 5485^2 .

It is a cyclic number.

It is not a de Polignac number, because 7840049101 - 2¹ = 7840049099 is a prime.

It is a super-2 number, since 2×7840049101² (a number of 21 digits) contains 22 as substring.

Together with 7840049099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7840049201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3920024550 + 3920024551.

It is an arithmetic number, because the mean of its divisors is an integer number (3920024551).

Almost surely, 2^7840049101 is an apocalyptic number.

It is an amenable number.

7840049101 is a deficient number, since it is larger than the sum of its proper divisors (1).

7840049101 is an equidigital number, since it uses as much as digits as its factorization.

7840049101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 7840049101 is about 88544.0517539151. The cubic root of 7840049101 is about 1986.5809239823.

Adding to 7840049101 its reverse (1019400487), we get a palindrome (8859449588).

The spelling of 7840049101 in words is "seven billion, eight hundred forty million, forty-nine thousand, one hundred one".