1078972587 has 48 divisors (see below), whose sum is σ = 1970542080. Its totient is φ = 552585600.

The previous prime is 1078972567. The next prime is 1078972603. The reversal of 1078972587 is 7852798701.

It is a happy number.

It is not a de Polignac number, because 1078972587 - 2⁷ = 1078972459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1078972547) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38239 + ... + 60167.

It is an arithmetic number, because the mean of its divisors is an integer number (41052960).

Almost surely, 2^1078972587 is an apocalyptic number.

1078972587 is a deficient number, since it is larger than the sum of its proper divisors (891569493).

1078972587 is a wasteful number, since it uses less digits than its factorization.

1078972587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22024 (or 22021 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 54.

The square root of 1078972587 is about 32847.7181399256. The cubic root of 1078972587 is about 1025.6601219108.

The spelling of 1078972587 in words is "one billion, seventy-eight million, nine hundred seventy-two thousand, five hundred eighty-seven".