1065549912 has 128 divisors (see below), whose sum is σ = 3117657600. Its totient is φ = 297197568.

The previous prime is 1065549893. The next prime is 1065549941. The reversal of 1065549912 is 2199455601.

It is a super-2 number, since 2×1065549912² = 2270793229926415488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1912738 + ... + 1913294.

It is an arithmetic number, because the mean of its divisors is an integer number (24356700).

Almost surely, 2^1065549912 is an apocalyptic number.

1065549912 is a gapful number since it is divisible by the number (12) 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 1065549912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1558828800).

1065549912 is an abundant number, since it is smaller than the sum of its proper divisors (2052107688).

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

1065549912 is a wasteful number, since it uses less digits than its factorization.

1065549912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 42.

The square root of 1065549912 is about 32642.7620154913. The cubic root of 1065549912 is about 1021.3892104983.

The spelling of 1065549912 in words is "one billion, sixty-five million, five hundred forty-nine thousand, nine hundred twelve".