1023265653 has 16 divisors (see below), whose sum is σ = 1498606080. Its totient is φ = 618173424.

The previous prime is 1023265637. The next prime is 1023265657. The reversal of 1023265653 is 3565623201.

It is not a de Polignac number, because 1023265653 - 2⁴ = 1023265637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023265657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388951 + ... + 391572.

It is an arithmetic number, because the mean of its divisors is an integer number (93662880).

Almost surely, 2^1023265653 is an apocalyptic number.

It is an amenable number.

1023265653 is a deficient number, since it is larger than the sum of its proper divisors (475340427).

1023265653 is a wasteful number, since it uses less digits than its factorization.

1023265653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780568.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 1023265653 is about 31988.5237702524. The cubic root of 1023265653 is about 1007.6958397855.

Adding to 1023265653 its reverse (3565623201), we get a palindrome (4588888854).

The spelling of 1023265653 in words is "one billion, twenty-three million, two hundred sixty-five thousand, six hundred fifty-three".