1330918381 has 8 divisors (see below), whose sum is σ = 1479532544. Its totient is φ = 1188909360.

The previous prime is 1330918367. The next prime is 1330918387. The reversal of 1330918381 is 1838190331.

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 1330918381 - 2⁵ = 1330918349 is a prime.

It is a super-2 number, since 2×1330918381² = 3542687473767322322, 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 1330918381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330918387) 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, 1650861 + ... + 1651666.

It is an arithmetic number, because the mean of its divisors is an integer number (184941568).

Almost surely, 2^1330918381 is an apocalyptic number.

It is an amenable number.

1330918381 is a deficient number, since it is larger than the sum of its proper divisors (148614163).

1330918381 is a wasteful number, since it uses less digits than its factorization.

1330918381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3302571.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1330918381 is about 36481.7540833771. The cubic root of 1330918381 is about 1099.9775149674.

The spelling of 1330918381 in words is "one billion, three hundred thirty million, nine hundred eighteen thousand, three hundred eighty-one".