1081053187 has 4 divisors (see below), whose sum is σ = 1081256256. Its totient is φ = 1080850120.

The previous prime is 1081053167. The next prime is 1081053217. The reversal of 1081053187 is 7813501801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1081053187 - 2⁷ = 1081053059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1081053167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93328 + ... + 104269.

It is an arithmetic number, because the mean of its divisors is an integer number (270314064).

Almost surely, 2^1081053187 is an apocalyptic number.

1081053187 is a deficient number, since it is larger than the sum of its proper divisors (203069).

1081053187 is an equidigital number, since it uses as much as digits as its factorization.

1081053187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203068.

The product of its (nonzero) digits is 6720, while the sum is 34.

The square root of 1081053187 is about 32879.3732756572. The cubic root of 1081053187 is about 1026.3189641819.

Adding to 1081053187 its reverse (7813501801), we get a palindrome (8894554988).

The spelling of 1081053187 in words is "one billion, eighty-one million, fifty-three thousand, one hundred eighty-seven".