1330666403 has 24 divisors (see below), whose sum is σ = 1536948000. Its totient is φ = 1148977280.

The previous prime is 1330666399. The next prime is 1330666423. The reversal of 1330666403 is 3046660331.

It is not a de Polignac number, because 1330666403 - 2² = 1330666399 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 1330666403.

It is not an unprimeable number, because it can be changed into a prime (1330666423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 413063 + ... + 416271.

It is an arithmetic number, because the mean of its divisors is an integer number (64039500).

Almost surely, 2^1330666403 is an apocalyptic number.

1330666403 is a deficient number, since it is larger than the sum of its proper divisors (206281597).

1330666403 is a wasteful number, since it uses less digits than its factorization.

1330666403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3403 (or 3392 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 32.

The square root of 1330666403 is about 36478.3004401247. The cubic root of 1330666403 is about 1099.9080923211.

The spelling of 1330666403 in words is "one billion, three hundred thirty million, six hundred sixty-six thousand, four hundred three".