1801654749 has 12 divisors (see below), whose sum is σ = 2639044512. Its totient is φ = 1184185800.

The previous prime is 1801654717. The next prime is 1801654753. The reversal of 1801654749 is 9474561081.

1801654749 is a `hidden beast` number, since 18 + 0 + 165 + 474 + 9 = 666.

It is not a de Polignac number, because 1801654749 - 2⁵ = 1801654717 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1801654649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1409107 + ... + 1410384.

It is an arithmetic number, because the mean of its divisors is an integer number (219920376).

Almost surely, 2^1801654749 is an apocalyptic number.

It is an amenable number.

1801654749 is a deficient number, since it is larger than the sum of its proper divisors (837389763).

1801654749 is a wasteful number, since it uses less digits than its factorization.

1801654749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2819568 (or 2819565 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 1801654749 is about 42445.9037953016. The cubic root of 1801654749 is about 1216.8130448600.

The spelling of 1801654749 in words is "one billion, eight hundred one million, six hundred fifty-four thousand, seven hundred forty-nine".