1078997656 has 96 divisors (see below), whose sum is σ = 2354163840. Its totient is φ = 462528000.

The previous prime is 1078997627. The next prime is 1078997657. The reversal of 1078997656 is 6567998701.

It is a self number, because there is not a number n which added to its sum of digits gives 1078997656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078997657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1229890 + ... + 1230766.

It is an arithmetic number, because the mean of its divisors is an integer number (24522540).

Almost surely, 2^1078997656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1078997656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1177081920).

1078997656 is an abundant number, since it is smaller than the sum of its proper divisors (1275166184).

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

1078997656 is a wasteful number, since it uses less digits than its factorization.

1078997656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977 (or 962 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 58.

The square root of 1078997656 is about 32848.0997319480. The cubic root of 1078997656 is about 1025.6680652928.

The spelling of 1078997656 in words is "one billion, seventy-eight million, nine hundred ninety-seven thousand, six hundred fifty-six".