1069399518 has 64 divisors (see below), whose sum is σ = 2478470400. Its totient is φ = 304012800.

The previous prime is 1069399483. The next prime is 1069399519. The reversal of 1069399518 is 8159939601.

It is a happy number.

It is a super-2 number, since 2×1069399518² = 2287230658197264648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1069399519) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 390213 + ... + 392943.

It is an arithmetic number, because the mean of its divisors is an integer number (38726100).

Almost surely, 2^1069399518 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1069399518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1239235200).

1069399518 is an abundant number, since it is smaller than the sum of its proper divisors (1409070882).

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

1069399518 is a wasteful number, since it uses less digits than its factorization.

1069399518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3113.

The product of its (nonzero) digits is 524880, while the sum is 51.

The square root of 1069399518 is about 32701.6745442798. The cubic root of 1069399518 is about 1022.6177531108.

The spelling of 1069399518 in words is "one billion, sixty-nine million, three hundred ninety-nine thousand, five hundred eighteen".