1087844978 has 32 divisors (see below), whose sum is σ = 1826459712. Its totient is φ = 481766400.

The previous prime is 1087844971. The next prime is 1087844999. The reversal of 1087844978 is 8794487801.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1087844971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129218 + ... + 137378.

It is an arithmetic number, because the mean of its divisors is an integer number (57076866).

Almost surely, 2^1087844978 is an apocalyptic number.

1087844978 is a deficient number, since it is larger than the sum of its proper divisors (738614734).

1087844978 is a wasteful number, since it uses less digits than its factorization.

1087844978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8330.

The product of its (nonzero) digits is 3612672, while the sum is 56.

The square root of 1087844978 is about 32982.4950238759. The cubic root of 1087844978 is about 1028.4637852648.

The spelling of 1087844978 in words is "one billion, eighty-seven million, eight hundred forty-four thousand, nine hundred seventy-eight".