1855114801 has 4 divisors (see below), whose sum is σ = 1858676004. Its totient is φ = 1851553600.

The previous prime is 1855114787. The next prime is 1855114819. The reversal of 1855114801 is 1084115581.

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 644144400 + 1210970401 = 25380^2 + 34799^2 .

It is a cyclic number.

It is not a de Polignac number, because 1855114801 - 2⁷ = 1855114673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1855114831) 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, 1779820 + ... + 1780861.

It is an arithmetic number, because the mean of its divisors is an integer number (464669001).

Almost surely, 2^1855114801 is an apocalyptic number.

It is an amenable number.

1855114801 is a deficient number, since it is larger than the sum of its proper divisors (3561203).

1855114801 is an equidigital number, since it uses as much as digits as its factorization.

1855114801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3561202.

The product of its (nonzero) digits is 6400, while the sum is 34.

The square root of 1855114801 is about 43071.0436488367. The cubic root of 1855114801 is about 1228.7313247959.

The spelling of 1855114801 in words is "one billion, eight hundred fifty-five million, one hundred fourteen thousand, eight hundred one".