2002642051 has 4 divisors (see below), whose sum is σ = 2003181400. Its totient is φ = 2002102704.

The previous prime is 2002642049. The next prime is 2002642097. The reversal of 2002642051 is 1502462002.

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 2002642051 - 2¹ = 2002642049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002642751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264066 + ... + 271543.

It is an arithmetic number, because the mean of its divisors is an integer number (500795350).

Almost surely, 2^2002642051 is an apocalyptic number.

2002642051 is a deficient number, since it is larger than the sum of its proper divisors (539349).

2002642051 is an equidigital number, since it uses as much as digits as its factorization.

2002642051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539348.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2002642051 is about 44750.8888291618. Note that the first 4 decimals coincide. The cubic root of 2002642051 is about 1260.4756017191.

The spelling of 2002642051 in words is "two billion, two million, six hundred forty-two thousand, fifty-one".