1087953817 has 4 divisors (see below), whose sum is σ = 1088362000. Its totient is φ = 1087545636.

The previous prime is 1087953799. The next prime is 1087953847. The reversal of 1087953817 is 7183597801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1087953817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1087953847) 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, 200067 + ... + 205432.

It is an arithmetic number, because the mean of its divisors is an integer number (272090500).

Almost surely, 2^1087953817 is an apocalyptic number.

It is an amenable number.

1087953817 is a deficient number, since it is larger than the sum of its proper divisors (408183).

1087953817 is an equidigital number, since it uses as much as digits as its factorization.

1087953817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408182.

The product of its (nonzero) digits is 423360, while the sum is 49.

The square root of 1087953817 is about 32984.1449335889. The cubic root of 1087953817 is about 1028.4980834229.

The spelling of 1087953817 in words is "one billion, eighty-seven million, nine hundred fifty-three thousand, eight hundred seventeen".