1653525028 has 6 divisors (see below), whose sum is σ = 2893668806. Its totient is φ = 826762512.

The previous prime is 1653525019. The next prime is 1653525061. The reversal of 1653525028 is 8205253561.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 889113124 + 764411904 = 29818^2 + 27648^2 .

It is an unprimeable number.

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, 206690625 + ... + 206690632.

Almost surely, 2^1653525028 is an apocalyptic number.

It is an amenable number.

1653525028 is a deficient number, since it is larger than the sum of its proper divisors (1240143778).

1653525028 is a wasteful number, since it uses less digits than its factorization.

1653525028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413381261 (or 413381259 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 1653525028 is about 40663.5589686884. The cubic root of 1653525028 is about 1182.5066478566.

Adding to 1653525028 its reverse (8205253561), we get a palindrome (9858778589).

The spelling of 1653525028 in words is "one billion, six hundred fifty-three million, five hundred twenty-five thousand, twenty-eight".