2001851902 has 16 divisors (see below), whose sum is σ = 3038878080. Its totient is φ = 988910208.

The previous prime is 2001851869. The next prime is 2001851903. The reversal of 2001851902 is 2091581002.

It is a super-2 number, since 2×2001851902² = 8014822075082035208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001851903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275338 + ... + 282514.

It is an arithmetic number, because the mean of its divisors is an integer number (189929880).

Almost surely, 2^2001851902 is an apocalyptic number.

2001851902 is a deficient number, since it is larger than the sum of its proper divisors (1037026178).

2001851902 is a wasteful number, since it uses less digits than its factorization.

2001851902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8835.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 2001851902 is about 44742.0596530826. The cubic root of 2001851902 is about 1260.3098049822.

The spelling of 2001851902 in words is "two billion, one million, eight hundred fifty-one thousand, nine hundred two".