3640533253 has 12 divisors (see below), whose sum is σ = 4304334252. Its totient is φ = 3069299520.

The previous prime is 3640533251. The next prime is 3640533257. The reversal of 3640533253 is 3523350463.

It can be written as a sum of positive squares in 2 ways, for example, as 1899390724 + 1741142529 = 43582^2 + 41727^2 .

It is not a de Polignac number, because 3640533253 - 2¹ = 3640533251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640533251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 606000 + ... + 611977.

It is an arithmetic number, because the mean of its divisors is an integer number (358694521).

Almost surely, 2^3640533253 is an apocalyptic number.

It is an amenable number.

3640533253 is a deficient number, since it is larger than the sum of its proper divisors (663800999).

3640533253 is a wasteful number, since it uses less digits than its factorization.

3640533253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218052 (or 1218045 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 34.

The square root of 3640533253 is about 60336.8316453557. The cubic root of 3640533253 is about 1538.3494506057.

The spelling of 3640533253 in words is "three billion, six hundred forty million, five hundred thirty-three thousand, two hundred fifty-three".