1253053645 has 16 divisors (see below), whose sum is σ = 1529130240. Its totient is φ = 985608000.

The previous prime is 1253053619. The next prime is 1253053679. The reversal of 1253053645 is 5463503521.

It is a de Polignac number, because none of the positive numbers 2^k-1253053645 is a prime.

It is a super-3 number, since 3×1253053645³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1253053645.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 62620 + ... + 80170.

It is an arithmetic number, because the mean of its divisors is an integer number (95570640).

Almost surely, 2^1253053645 is an apocalyptic number.

It is an amenable number.

1253053645 is a deficient number, since it is larger than the sum of its proper divisors (276076595).

1253053645 is a wasteful number, since it uses less digits than its factorization.

1253053645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17796.

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 1253053645 is about 35398.4977788606. The cubic root of 1253053645 is about 1078.0938155175.

The spelling of 1253053645 in words is "one billion, two hundred fifty-three million, fifty-three thousand, six hundred forty-five".