1078396009 has 16 divisors (see below), whose sum is σ = 1145499264. Its totient is φ = 1013126400.

The previous prime is 1078395949. The next prime is 1078396013. The reversal of 1078396009 is 9006938701.

It is a cyclic number.

It is not a de Polignac number, because 1078396009 - 2¹¹ = 1078393961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1078396609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343969 + ... + 347089.

It is an arithmetic number, because the mean of its divisors is an integer number (71593704).

Almost surely, 2^1078396009 is an apocalyptic number.

It is an amenable number.

1078396009 is a deficient number, since it is larger than the sum of its proper divisors (67103255).

1078396009 is a wasteful number, since it uses less digits than its factorization.

1078396009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3408.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 1078396009 is about 32838.9404366219. The cubic root of 1078396009 is about 1025.4773930077.

The spelling of 1078396009 in words is "one billion, seventy-eight million, three hundred ninety-six thousand, nine".