1902225601 has 2 divisors, whose sum is σ = 1902225602. Its totient is φ = 1902225600.

The previous prime is 1902225583. The next prime is 1902225613. The reversal of 1902225601 is 1065222091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1795640625 + 106584976 = 42375^2 + 10324^2 .

It is a cyclic number.

It is not a de Polignac number, because 1902225601 - 2⁹ = 1902225089 is a prime.

It is a super-2 number, since 2×1902225601² = 7236924474199622402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1902225601.

It is not a weakly prime, because it can be changed into another prime (1902225631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 951112800 + 951112801.

It is an arithmetic number, because the mean of its divisors is an integer number (951112801).

Almost surely, 2^1902225601 is an apocalyptic number.

It is an amenable number.

1902225601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1902225601 is an equidigital number, since it uses as much as digits as its factorization.

1902225601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1902225601 is about 43614.5113580331. The cubic root of 1902225601 is about 1239.0457454106.

Adding to 1902225601 its reverse (1065222091), we get a palindrome (2967447692).

The spelling of 1902225601 in words is "one billion, nine hundred two million, two hundred twenty-five thousand, six hundred one".