1318923653 has 8 divisors (see below), whose sum is σ = 1337355360. Its totient is φ = 1300607280.

The previous prime is 1318923611. The next prime is 1318923659. The reversal of 1318923653 is 3563298131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1318923653 - 2²⁶ = 1251814789 is a prime.

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 1318923653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318923659) 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, 5675 + ... + 51672.

It is an arithmetic number, because the mean of its divisors is an integer number (167169420).

Almost surely, 2^1318923653 is an apocalyptic number.

It is an amenable number.

1318923653 is a deficient number, since it is larger than the sum of its proper divisors (18431707).

1318923653 is a wasteful number, since it uses less digits than its factorization.

1318923653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57667.

The product of its digits is 116640, while the sum is 41.

The square root of 1318923653 is about 36316.9884902369. The cubic root of 1318923653 is about 1096.6630700613.

The spelling of 1318923653 in words is "one billion, three hundred eighteen million, nine hundred twenty-three thousand, six hundred fifty-three".