1082381187 has 4 divisors (see below), whose sum is σ = 1443174920. Its totient is φ = 721587456.

The previous prime is 1082381149. The next prime is 1082381191. The reversal of 1082381187 is 7811832801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7811832801 = 3 ⋅2603944267.

It is not a de Polignac number, because 1082381187 - 2⁸ = 1082380931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1082381107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180396862 + ... + 180396867.

It is an arithmetic number, because the mean of its divisors is an integer number (360793730).

Almost surely, 2^1082381187 is an apocalyptic number.

1082381187 is a deficient number, since it is larger than the sum of its proper divisors (360793733).

1082381187 is an equidigital number, since it uses as much as digits as its factorization.

1082381187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360793732.

The product of its (nonzero) digits is 21504, while the sum is 39.

The square root of 1082381187 is about 32899.5621095479. The cubic root of 1082381187 is about 1026.7390464633.

The spelling of 1082381187 in words is "one billion, eighty-two million, three hundred eighty-one thousand, one hundred eighty-seven".