1800427949 has 8 divisors (see below), whose sum is σ = 1839819072. Its totient is φ = 1761458400.

The previous prime is 1800427939. The next prime is 1800427963. The reversal of 1800427949 is 9497240081.

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

It is a cyclic number.

It is not a de Polignac number, because 1800427949 - 2¹⁶ = 1800362413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1800427939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96752 + ... + 113849.

It is an arithmetic number, because the mean of its divisors is an integer number (229977384).

Almost surely, 2^1800427949 is an apocalyptic number.

It is an amenable number.

1800427949 is a deficient number, since it is larger than the sum of its proper divisors (39391123).

1800427949 is a wasteful number, since it uses less digits than its factorization.

1800427949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210787.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 1800427949 is about 42431.4499987922. The cubic root of 1800427949 is about 1216.5367941522.

The spelling of 1800427949 in words is "one billion, eight hundred million, four hundred twenty-seven thousand, nine hundred forty-nine".