2009154067 has 4 divisors (see below), whose sum is σ = 2009290320. Its totient is φ = 2009017816.

The previous prime is 2009154053. The next prime is 2009154071. The reversal of 2009154067 is 7604519002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2009154067 - 2²⁷ = 1874936339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2009157067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42892 + ... + 76537.

It is an arithmetic number, because the mean of its divisors is an integer number (502322580).

Almost surely, 2^2009154067 is an apocalyptic number.

2009154067 is a deficient number, since it is larger than the sum of its proper divisors (136253).

2009154067 is a wasteful number, since it uses less digits than its factorization.

2009154067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136252.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 2009154067 is about 44823.5882878647. The cubic root of 2009154067 is about 1261.8403582378.

The spelling of 2009154067 in words is "two billion, nine million, one hundred fifty-four thousand, sixty-seven".