1803061642 has 8 divisors (see below), whose sum is σ = 2713824036. Its totient is φ = 898453632.

The previous prime is 1803061597. The next prime is 1803061661. The reversal of 1803061642 is 2461603081.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1737305761 + 65755881 = 41681^2 + 8109^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1537863 + ... + 1539034.

Almost surely, 2^1803061642 is an apocalyptic number.

1803061642 is a deficient number, since it is larger than the sum of its proper divisors (910762394).

1803061642 is a wasteful number, since it uses less digits than its factorization.

1803061642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3077192.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1803061642 is about 42462.4733382313. The cubic root of 1803061642 is about 1217.1296945661.

The spelling of 1803061642 in words is "one billion, eight hundred three million, sixty-one thousand, six hundred forty-two".