2168740455 has 16 divisors (see below), whose sum is σ = 3965697024. Its totient is φ = 991424160.

The previous prime is 2168740451. The next prime is 2168740463. The reversal of 2168740455 is 5540478612.

It is a happy number.

It is not a de Polignac number, because 2168740455 - 2² = 2168740451 is a prime.

It is a super-2 number, since 2×2168740455² = 9406870322307214050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2168740451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10327231 + ... + 10327440.

It is an arithmetic number, because the mean of its divisors is an integer number (247856064).

Almost surely, 2^2168740455 is an apocalyptic number.

2168740455 is a deficient number, since it is larger than the sum of its proper divisors (1796956569).

2168740455 is a wasteful number, since it uses less digits than its factorization.

2168740455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20654686.

The product of its (nonzero) digits is 268800, while the sum is 42.

The square root of 2168740455 is about 46569.7375448907. The cubic root of 2168740455 is about 1294.4020544666.

The spelling of 2168740455 in words is "two billion, one hundred sixty-eight million, seven hundred forty thousand, four hundred fifty-five".