1081320413 has 8 divisors (see below), whose sum is σ = 1131186048. Its totient is φ = 1031692464.

The previous prime is 1081320403. The next prime is 1081320421. The reversal of 1081320413 is 3140231801.

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 1081320413 - 2⁶ = 1081320349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081320403) 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, 50081 + ... + 68342.

It is an arithmetic number, because the mean of its divisors is an integer number (141398256).

Almost surely, 2^1081320413 is an apocalyptic number.

It is an amenable number.

1081320413 is a deficient number, since it is larger than the sum of its proper divisors (49865635).

1081320413 is a wasteful number, since it uses less digits than its factorization.

1081320413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118843.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1081320413 is about 32883.4367577356. The cubic root of 1081320413 is about 1026.4035226230.

The spelling of 1081320413 in words is "one billion, eighty-one million, three hundred twenty thousand, four hundred thirteen".