1000009156 has 24 divisors (see below), whose sum is σ = 1879065216. Its totient is φ = 463962240.

The previous prime is 1000009133. The next prime is 1000009163. The reversal of 1000009156 is 6519000001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98736 + ... + 108391.

It is an arithmetic number, because the mean of its divisors is an integer number (78294384).

Almost surely, 2^1000009156 is an apocalyptic number.

It is an amenable number.

1000009156 is a deficient number, since it is larger than the sum of its proper divisors (879056060).

1000009156 is a wasteful number, since it uses less digits than its factorization.

1000009156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207219 (or 207217 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 1000009156 is about 31622.9213704237. The cubic root of 1000009156 is about 1000.0030519907.

Adding to 1000009156 its reverse (6519000001), we get a palindrome (7519009157).

The spelling of 1000009156 in words is "one billion, nine thousand, one hundred fifty-six".