2643642141 has 16 divisors (see below), whose sum is σ = 4032503808. Its totient is φ = 1509116400.

The previous prime is 2643642109. The next prime is 2643642151. The reversal of 2643642141 is 1412463462.

It is a happy number.

It is not a de Polignac number, because 2643642141 - 2⁵ = 2643642109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643642101) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 42705 + ... + 84326.

It is an arithmetic number, because the mean of its divisors is an integer number (252031488).

Almost surely, 2^2643642141 is an apocalyptic number.

2643642141 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2643642141 is a deficient number, since it is larger than the sum of its proper divisors (1388861667).

2643642141 is a wasteful number, since it uses less digits than its factorization.

2643642141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128032.

The product of its digits is 27648, while the sum is 33.

The square root of 2643642141 is about 51416.3606355020. The cubic root of 2643642141 is about 1382.7199280826.

The spelling of 2643642141 in words is "two billion, six hundred forty-three million, six hundred forty-two thousand, one hundred forty-one".