2002100951 has 4 divisors (see below), whose sum is σ = 2003780352. Its totient is φ = 2000421552.

The previous prime is 2002100929. The next prime is 2002100957. The reversal of 2002100951 is 1590012002.

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 2002100951 - 2¹⁸ = 2001838807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002100957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 837911 + ... + 840296.

It is an arithmetic number, because the mean of its divisors is an integer number (500945088).

Almost surely, 2^2002100951 is an apocalyptic number.

2002100951 is a deficient number, since it is larger than the sum of its proper divisors (1679401).

2002100951 is a wasteful number, since it uses less digits than its factorization.

2002100951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679400.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 2002100951 is about 44744.8427307550. The cubic root of 2002100951 is about 1260.3620675698.

Adding to 2002100951 its reverse (1590012002), we get a palindrome (3592112953).

The spelling of 2002100951 in words is "two billion, two million, one hundred thousand, nine hundred fifty-one".