1330643253 has 8 divisors (see below), whose sum is σ = 1774854400. Its totient is φ = 886763808.

The previous prime is 1330643231. The next prime is 1330643267. The reversal of 1330643253 is 3523460331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1330643253 - 2⁶ = 1330643189 is a prime.

It is a super-2 number, since 2×1330643253² = 3541222933508844018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1330643253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330643753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73408 + ... + 89721.

It is an arithmetic number, because the mean of its divisors is an integer number (221856800).

Almost surely, 2^1330643253 is an apocalyptic number.

It is an amenable number.

1330643253 is a deficient number, since it is larger than the sum of its proper divisors (444211147).

1330643253 is a wasteful number, since it uses less digits than its factorization.

1330643253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165851.

The product of its (nonzero) digits is 19440, while the sum is 30.

The square root of 1330643253 is about 36477.9831268123. The cubic root of 1330643253 is about 1099.9017138078.

It can be divided in two parts, 1330643 and 253, that added together give a triangular number (1330896 = T₁₆₃₁).

The spelling of 1330643253 in words is "one billion, three hundred thirty million, six hundred forty-three thousand, two hundred fifty-three".