1801427338 has 16 divisors (see below), whose sum is σ = 2863844424. Its totient is φ = 846914560.

The previous prime is 1801427323. The next prime is 1801427357. The reversal of 1801427338 is 8337241081.

It can be written as a sum of positive squares in 4 ways, for example, as 1625944329 + 175483009 = 40323^2 + 13247^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1801427297 and 1801427306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11106 + ... + 61042.

Almost surely, 2^1801427338 is an apocalyptic number.

1801427338 is a deficient number, since it is larger than the sum of its proper divisors (1062417086).

1801427338 is a wasteful number, since it uses less digits than its factorization.

1801427338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51017.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 1801427338 is about 42443.2248774760. The cubic root of 1801427338 is about 1216.7618459432.

The spelling of 1801427338 in words is "one billion, eight hundred one million, four hundred twenty-seven thousand, three hundred thirty-eight".