1653420049 has 2 divisors, whose sum is σ = 1653420050. Its totient is φ = 1653420048.

The previous prime is 1653420029. The next prime is 1653420101. The reversal of 1653420049 is 9400243561.

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., 854509824 + 798910225 = 29232^2 + 28265^2 .

It is an emirp because it is prime and its reverse (9400243561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1653420049 - 2¹⁷ = 1653288977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1653419996 and 1653420023.

It is not a weakly prime, because it can be changed into another prime (1653420029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826710024 + 826710025.

It is an arithmetic number, because the mean of its divisors is an integer number (826710025).

Almost surely, 2^1653420049 is an apocalyptic number.

It is an amenable number.

1653420049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1653420049 is an equidigital number, since it uses as much as digits as its factorization.

1653420049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1653420049 is about 40662.2681241467. The cubic root of 1653420049 is about 1182.4816223322.

The spelling of 1653420049 in words is "one billion, six hundred fifty-three million, four hundred twenty thousand, forty-nine".