1092921987 has 8 divisors (see below), whose sum is σ = 1457445904. Its totient is φ = 728506368.

The previous prime is 1092921943. The next prime is 1092921997. The reversal of 1092921987 is 7891292901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1092921987 - 2⁷ = 1092921859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1092921917) 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 7 ways as a sum of consecutive naturals, for example, 483 + ... + 46755.

It is an arithmetic number, because the mean of its divisors is an integer number (182180738).

Almost surely, 2^1092921987 is an apocalyptic number.

1092921987 is a deficient number, since it is larger than the sum of its proper divisors (364523917).

1092921987 is an equidigital number, since it uses as much as digits as its factorization.

1092921987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54149.

The product of its (nonzero) digits is 163296, while the sum is 48.

The square root of 1092921987 is about 33059.3706382926. The cubic root of 1092921987 is about 1030.0612610058.

The spelling of 1092921987 in words is "one billion, ninety-two million, nine hundred twenty-one thousand, nine hundred eighty-seven".