1087705949185 has 4 divisors (see below), whose sum is σ = 1305247139028. Its totient is φ = 870164759344.

The previous prime is 1087705949081. The next prime is 1087705949201. The reversal of 1087705949185 is 5819495077801.

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

It can be written as a sum of positive squares in 2 ways, for example, as 465834915441 + 621871033744 = 682521^2 + 788588^2 .

It is a cyclic number.

It is not a de Polignac number, because 1087705949185 - 2¹⁵ = 1087705916417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108770594914 + ... + 108770594923.

It is an arithmetic number, because the mean of its divisors is an integer number (326311784757).

Almost surely, 2^{1087705949185} is an apocalyptic number.

It is an amenable number.

1087705949185 is a deficient number, since it is larger than the sum of its proper divisors (217541189843).

1087705949185 is an equidigital number, since it uses as much as digits as its factorization.

1087705949185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217541189842.

The product of its (nonzero) digits is 25401600, while the sum is 64.

The spelling of 1087705949185 in words is "one trillion, eighty-seven billion, seven hundred five million, nine hundred forty-nine thousand, one hundred eighty-five".