2051005158 has 32 divisors (see below), whose sum is σ = 4567605120. Its totient is φ = 682196040.

The previous prime is 2051005157. The next prime is 2051005181. The reversal of 2051005158 is 8515001502.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051005157) 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, 15448 + ... + 65883.

It is an arithmetic number, because the mean of its divisors is an integer number (142737660).

Almost surely, 2^2051005158 is an apocalyptic number.

2051005158 is an abundant number, since it is smaller than the sum of its proper divisors (2516599962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2051005158 is a wasteful number, since it uses less digits than its factorization.

2051005158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81809 (or 81803 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The square root of 2051005158 is about 45288.0244435546. The cubic root of 2051005158 is about 1270.5416826649.

The spelling of 2051005158 in words is "two billion, fifty-one million, five thousand, one hundred fifty-eight".