1081376681 has 32 divisors (see below), whose sum is σ = 1462406400. Its totient is φ = 773683200.

The previous prime is 1081376663. The next prime is 1081376687. The reversal of 1081376681 is 1866731801.

It is a cyclic number.

It is not a de Polignac number, because 1081376681 - 2⁶ = 1081376617 is a prime.

It is a super-2 number, since 2×1081376681² = 2338751052421151522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (1081376687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43595 + ... + 63743.

It is an arithmetic number, because the mean of its divisors is an integer number (45700200).

Almost surely, 2^1081376681 is an apocalyptic number.

1081376681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1081376681 is a deficient number, since it is larger than the sum of its proper divisors (381029719).

1081376681 is a wasteful number, since it uses less digits than its factorization.

1081376681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20225.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 1081376681 is about 32884.2923141125. The cubic root of 1081376681 is about 1026.4213257554.

The spelling of 1081376681 in words is "one billion, eighty-one million, three hundred seventy-six thousand, six hundred eighty-one".