1326581113 has 8 divisors (see below), whose sum is σ = 1558501056. Its totient is φ = 1113214800.

The previous prime is 1326581107. The next prime is 1326581119. The reversal of 1326581113 is 3111856231.

It is an interprime number because it is at equal distance from previous prime (1326581107) and next prime (1326581119).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1326581113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1326581119) 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, 4638253 + ... + 4638538.

It is an arithmetic number, because the mean of its divisors is an integer number (194812632).

Almost surely, 2^1326581113 is an apocalyptic number.

1326581113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1326581113 is a deficient number, since it is larger than the sum of its proper divisors (231919943).

1326581113 is a wasteful number, since it uses less digits than its factorization.

1326581113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9276815.

The product of its digits is 4320, while the sum is 31.

The square root of 1326581113 is about 36422.2612285399. The cubic root of 1326581113 is about 1098.7813261052.

The spelling of 1326581113 in words is "one billion, three hundred twenty-six million, five hundred eighty-one thousand, one hundred thirteen".