2162077642 has 4 divisors (see below), whose sum is σ = 3243116466. Its totient is φ = 1081038820.

The previous prime is 2162077639. The next prime is 2162077649. The reversal of 2162077642 is 2467702612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1730643201 + 431434441 = 41601^2 + 20771^2 .

It is not an unprimeable number, because it can be changed into a prime (2162077649) 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 as a sum of consecutive naturals, namely, 540519409 + ... + 540519412.

Almost surely, 2^2162077642 is an apocalyptic number.

2162077642 is a deficient number, since it is larger than the sum of its proper divisors (1081038824).

2162077642 is a wasteful number, since it uses less digits than its factorization.

2162077642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081038823.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 2162077642 is about 46498.1466512376. The cubic root of 2162077642 is about 1293.0751389827.

The spelling of 2162077642 in words is "two billion, one hundred sixty-two million, seventy-seven thousand, six hundred forty-two".