2061868455 has 12 divisors (see below), whose sum is σ = 3573905400. Its totient is φ = 1099663152.

The previous prime is 2061868453. The next prime is 2061868483. The reversal of 2061868455 is 5548681602.

2061868455 is a `hidden beast` number, since 20 + 618 + 6 + 8 + 4 + 5 + 5 = 666.

It is not a de Polignac number, because 2061868455 - 2¹ = 2061868453 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 45819299 = 2061868455 / (2 + 0 + 6 + 1 + 8 + 6 + 8 + 4 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 2061868455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061868451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22909605 + ... + 22909694.

It is an arithmetic number, because the mean of its divisors is an integer number (297825450).

Almost surely, 2^2061868455 is an apocalyptic number.

2061868455 is a deficient number, since it is larger than the sum of its proper divisors (1512036945).

2061868455 is a wasteful number, since it uses less digits than its factorization.

2061868455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45819310 (or 45819307 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The square root of 2061868455 is about 45407.8016975057. The cubic root of 2061868455 is about 1272.7809058420.

The spelling of 2061868455 in words is "two billion, sixty-one million, eight hundred sixty-eight thousand, four hundred fifty-five".