1653420101 has 2 divisors, whose sum is σ = 1653420102. Its totient is φ = 1653420100.

The previous prime is 1653420049. The next prime is 1653420121. The reversal of 1653420101 is 1010243561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 883635076 + 769785025 = 29726^2 + 27745^2 .

It is an emirp because it is prime and its reverse (1010243561) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1653420101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1653420121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826710050 + 826710051.

It is an arithmetic number, because the mean of its divisors is an integer number (826710051).

Almost surely, 2^1653420101 is an apocalyptic number.

It is an amenable number.

1653420101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1653420101 is an equidigital number, since it uses as much as digits as its factorization.

1653420101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1653420101 is about 40662.2687635602. The cubic root of 1653420101 is about 1182.4816347286.

Adding to 1653420101 its reverse (1010243561), we get a palindrome (2663663662).

The spelling of 1653420101 in words is "one billion, six hundred fifty-three million, four hundred twenty thousand, one hundred one".