1081376409 has 8 divisors (see below), whose sum is σ = 1526649120. Its totient is φ = 678510656.

The previous prime is 1081376369. The next prime is 1081376419. The reversal of 1081376409 is 9046731801.

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 1081376409 - 2¹⁶ = 1081310873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1081376419) 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, 10601679 + ... + 10601780.

It is an arithmetic number, because the mean of its divisors is an integer number (190831140).

Almost surely, 2^1081376409 is an apocalyptic number.

It is an amenable number.

1081376409 is a deficient number, since it is larger than the sum of its proper divisors (445272711).

1081376409 is a wasteful number, since it uses less digits than its factorization.

1081376409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21203479.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 1081376409 is about 32884.2881783991. The cubic root of 1081376409 is about 1026.4212396964.

The spelling of 1081376409 in words is "one billion, eighty-one million, three hundred seventy-six thousand, four hundred nine".