2006157990 has 16 divisors (see below), whose sum is σ = 4814779248. Its totient is φ = 534975456.

The previous prime is 2006157983. The next prime is 2006158001. The reversal of 2006157990 is 997516002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33435937 + ... + 33435996.

It is an arithmetic number, because the mean of its divisors is an integer number (300923703).

Almost surely, 2^2006157990 is an apocalyptic number.

2006157990 is an abundant number, since it is smaller than the sum of its proper divisors (2808621258).

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

2006157990 is a wasteful number, since it uses less digits than its factorization.

2006157990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66871943.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 2006157990 is about 44790.1550566640. The cubic root of 2006157990 is about 1261.2128218851.

The spelling of 2006157990 in words is "two billion, six million, one hundred fifty-seven thousand, nine hundred ninety".