1001095381 has 16 divisors (see below), whose sum is σ = 1177682688. Its totient is φ = 838958400.

The previous prime is 1001095373. The next prime is 1001095393. The reversal of 1001095381 is 1835901001.

It is a cyclic number.

It is not a de Polignac number, because 1001095381 - 2³ = 1001095373 is a prime.

It is a super-2 number, since 2×1001095381² = 2004383923719070322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001095321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113140 + ... + 121666.

It is an arithmetic number, because the mean of its divisors is an integer number (73605168).

Almost surely, 2^1001095381 is an apocalyptic number.

1001095381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1001095381 is a deficient number, since it is larger than the sum of its proper divisors (176587307).

1001095381 is a wasteful number, since it uses less digits than its factorization.

1001095381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9372.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 1001095381 is about 31640.0913557467. The cubic root of 1001095381 is about 1000.3649937633.

Adding to 1001095381 its reverse (1835901001), we get a palindrome (2836996382).

The spelling of 1001095381 in words is "one billion, one million, ninety-five thousand, three hundred eighty-one".