2051432906 has 16 divisors (see below), whose sum is σ = 3158098944. Its totient is φ = 998875584.

The previous prime is 2051432899. The next prime is 2051432963. The reversal of 2051432906 is 6092341502.

It is a happy number.

It is a Curzon number.

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, 6410 + ... + 64373.

It is an arithmetic number, because the mean of its divisors is an integer number (197381184).

Almost surely, 2^2051432906 is an apocalyptic number.

2051432906 is a deficient number, since it is larger than the sum of its proper divisors (1106666038).

2051432906 is a wasteful number, since it uses less digits than its factorization.

2051432906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71165.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 2051432906 is about 45292.7467261591. The cubic root of 2051432906 is about 1270.6300025934.

The spelling of 2051432906 in words is "two billion, fifty-one million, four hundred thirty-two thousand, nine hundred six".