1065779121 has 8 divisors (see below), whose sum is σ = 1550224224. Its totient is φ = 645926720.

The previous prime is 1065779107. The next prime is 1065779131. The reversal of 1065779121 is 1219775601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1065779121 - 2⁵ = 1065779089 is a prime.

It is a super-2 number, since 2×1065779121² = 2271770269519065282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1065779121.

It is not an unprimeable number, because it can be changed into a prime (1065779131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16148136 + ... + 16148201.

It is an arithmetic number, because the mean of its divisors is an integer number (193778028).

Almost surely, 2^1065779121 is an apocalyptic number.

1065779121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1065779121 is a deficient number, since it is larger than the sum of its proper divisors (484445103).

1065779121 is a wasteful number, since it uses less digits than its factorization.

1065779121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32296351.

The product of its (nonzero) digits is 26460, while the sum is 39.

The square root of 1065779121 is about 32646.2726968945. The cubic root of 1065779121 is about 1021.4624417980.

The spelling of 1065779121 in words is "one billion, sixty-five million, seven hundred seventy-nine thousand, one hundred twenty-one".