1087923649 has 8 divisors (see below), whose sum is σ = 1096065000. Its totient is φ = 1079793792.

The previous prime is 1087923631. The next prime is 1087923673. The reversal of 1087923649 is 9463297801.

It can be written as a sum of positive squares in 4 ways, for example, as 67568400 + 1020355249 = 8220^2 + 31943^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1087923649 - 2¹⁷ = 1087792577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1087923049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306517 + ... + 310045.

It is an arithmetic number, because the mean of its divisors is an integer number (137008125).

Almost surely, 2^1087923649 is an apocalyptic number.

It is an amenable number.

1087923649 is a deficient number, since it is larger than the sum of its proper divisors (8141351).

1087923649 is a wasteful number, since it uses less digits than its factorization.

1087923649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5747.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 1087923649 is about 32983.6876197917. The cubic root of 1087923649 is about 1028.4885768867.

The spelling of 1087923649 in words is "one billion, eighty-seven million, nine hundred twenty-three thousand, six hundred forty-nine".