1865297055 has 16 divisors (see below), whose sum is σ = 2985264864. Its totient is φ = 994561920.

The previous prime is 1865297003. The next prime is 1865297107. The reversal of 1865297055 is 5507925681.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1865297003) and next prime (1865297107).

It is not a de Polignac number, because 1865297055 - 2¹⁴ = 1865280671 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1865296995 and 1865297013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51085 + ... + 79625.

It is an arithmetic number, because the mean of its divisors is an integer number (186579054).

Almost surely, 2^1865297055 is an apocalyptic number.

1865297055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1865297055 is a deficient number, since it is larger than the sum of its proper divisors (1119967809).

1865297055 is a wasteful number, since it uses less digits than its factorization.

1865297055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32906.

The product of its (nonzero) digits is 756000, while the sum is 48.

The square root of 1865297055 is about 43189.0849057954. The cubic root of 1865297055 is about 1230.9752890004.

The spelling of 1865297055 in words is "one billion, eight hundred sixty-five million, two hundred ninety-seven thousand, fifty-five".