1803611093242 has 12 divisors (see below), whose sum is σ = 3147117315930. Its totient is φ = 772976182776.

The previous prime is 1803611093209. The next prime is 1803611093261. The reversal of 1803611093242 is 2423901163081.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1782649555281 + 20961537961 = 1335159^2 + 144781^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1803611093195 and 1803611093204.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9202097317 + ... + 9202097512.

Almost surely, 2^{1803611093242} is an apocalyptic number.

1803611093242 is a deficient number, since it is larger than the sum of its proper divisors (1343506222688).

1803611093242 is a wasteful number, since it uses less digits than its factorization.

1803611093242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18404194845 (or 18404194838 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 1803611093242 in words is "one trillion, eight hundred three billion, six hundred eleven million, ninety-three thousand, two hundred forty-two".