1087574993 has 4 divisors (see below), whose sum is σ = 1088844900. Its totient is φ = 1086305088.

The previous prime is 1087574981. The next prime is 1087575001. The reversal of 1087574993 is 3994757801.

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 956541184 + 131033809 = 30928^2 + 11447^2 .

It is a cyclic number.

It is not a de Polignac number, because 1087574993 - 2⁴ = 1087574977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1087574903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633668 + ... + 635381.

It is an arithmetic number, because the mean of its divisors is an integer number (272211225).

Almost surely, 2^1087574993 is an apocalyptic number.

It is an amenable number.

1087574993 is a deficient number, since it is larger than the sum of its proper divisors (1269907).

1087574993 is an equidigital number, since it uses as much as digits as its factorization.

1087574993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269906.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The square root of 1087574993 is about 32978.4019170123. The cubic root of 1087574993 is about 1028.3786956994.

The spelling of 1087574993 in words is "one billion, eighty-seven million, five hundred seventy-four thousand, nine hundred ninety-three".