1801255851 has 12 divisors (see below), whose sum is σ = 2602470312. Its totient is φ = 1200534336.

The previous prime is 1801255783. The next prime is 1801255889. The reversal of 1801255851 is 1585521081.

It is not a de Polignac number, because 1801255851 - 2¹³ = 1801247659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1801255891) 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, 15960 + ... + 62106.

It is an arithmetic number, because the mean of its divisors is an integer number (216872526).

Almost surely, 2^1801255851 is an apocalyptic number.

1801255851 is a deficient number, since it is larger than the sum of its proper divisors (801214461).

1801255851 is a wasteful number, since it uses less digits than its factorization.

1801255851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50490 (or 50487 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 36.

The square root of 1801255851 is about 42441.2046365322. The cubic root of 1801255851 is about 1216.7232348086.

The spelling of 1801255851 in words is "one billion, eight hundred one million, two hundred fifty-five thousand, eight hundred fifty-one".