1851406055 has 8 divisors (see below), whose sum is σ = 2221977744. Its totient is φ = 1480931200.

The previous prime is 1851406049. The next prime is 1851406061. The reversal of 1851406055 is 5506041581.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1851406049) and next prime (1851406061).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1851406055 - 2⁶ = 1851405991 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 28160 + ... + 67050.

It is an arithmetic number, because the mean of its divisors is an integer number (277747218).

Almost surely, 2^1851406055 is an apocalyptic number.

1851406055 is a deficient number, since it is larger than the sum of its proper divisors (370571689).

1851406055 is an equidigital number, since it uses as much as digits as its factorization.

1851406055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48417.

The product of its (nonzero) digits is 24000, while the sum is 35.

The square root of 1851406055 is about 43027.9682880798. The cubic root of 1851406055 is about 1227.9119518599.

The spelling of 1851406055 in words is "one billion, eight hundred fifty-one million, four hundred six thousand, fifty-five".