1069778016 has 120 divisors (see below), whose sum is σ = 3191048784. Its totient is φ = 351509760.

The previous prime is 1069777999. The next prime is 1069778041. The reversal of 1069778016 is 6108779601.

It is a super-2 number, since 2×1069778016² = 2288850007033792512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 181126 + ... + 186938.

Almost surely, 2^1069778016 is an apocalyptic number.

1069778016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1069778016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1595524392).

1069778016 is an abundant number, since it is smaller than the sum of its proper divisors (2121270768).

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

1069778016 is an equidigital number, since it uses as much as digits as its factorization.

1069778016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5906 (or 5889 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 1069778016 is about 32707.4611671404. The cubic root of 1069778016 is about 1022.7383856441.

The spelling of 1069778016 in words is "one billion, sixty-nine million, seven hundred seventy-eight thousand, sixteen".