2162640377 has 4 divisors (see below), whose sum is σ = 2162953380. Its totient is φ = 2162327376.

The previous prime is 2162640367. The next prime is 2162640413. The reversal of 2162640377 is 7730462612.

2162640377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1437092281 + 725548096 = 37909^2 + 26936^2 .

It is a cyclic number.

It is not a de Polignac number, because 2162640377 - 2⁶ = 2162640313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2162640377.

It is not an unprimeable number, because it can be changed into a prime (2162640307) 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, 145898 + ... + 160035.

It is an arithmetic number, because the mean of its divisors is an integer number (540738345).

Almost surely, 2^2162640377 is an apocalyptic number.

It is an amenable number.

2162640377 is a deficient number, since it is larger than the sum of its proper divisors (313003).

2162640377 is an equidigital number, since it uses as much as digits as its factorization.

2162640377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313002.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 2162640377 is about 46504.1974127067. The cubic root of 2162640377 is about 1293.1873143432.

The spelling of 2162640377 in words is "two billion, one hundred sixty-two million, six hundred forty thousand, three hundred seventy-seven".