1087989378 has 32 divisors (see below), whose sum is σ = 2594958336. Its totient is φ = 297338448.

The previous prime is 1087989373. The next prime is 1087989437. The reversal of 1087989378 is 8739897801.

It is not an unprimeable number, because it can be changed into a prime (1087989373) 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, 562176 + ... + 564107.

It is an arithmetic number, because the mean of its divisors is an integer number (81092448).

Almost surely, 2^1087989378 is an apocalyptic number.

1087989378 is an abundant number, since it is smaller than the sum of its proper divisors (1506968958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1087989378 is a wasteful number, since it uses less digits than its factorization.

1087989378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126318.

The product of its (nonzero) digits is 6096384, while the sum is 60.

The square root of 1087989378 is about 32984.6839912102. The cubic root of 1087989378 is about 1028.5092891748.

The spelling of 1087989378 in words is "one billion, eighty-seven million, nine hundred eighty-nine thousand, three hundred seventy-eight".