1903065842 has 8 divisors (see below), whose sum is σ = 2854927836. Its totient is φ = 951423232.

The previous prime is 1903065841. The next prime is 1903065847. The reversal of 1903065842 is 2485603091.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1874110681 + 28955161 = 43291^2 + 5381^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1903065796 and 1903065805.

It is not an unprimeable number, because it can be changed into a prime (1903065841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31103 + ... + 69090.

Almost surely, 2^1903065842 is an apocalyptic number.

1903065842 is a deficient number, since it is larger than the sum of its proper divisors (951861994).

1903065842 is a wasteful number, since it uses less digits than its factorization.

1903065842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109692.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 1903065842 is about 43624.1428798320. The cubic root of 1903065842 is about 1239.2281534601.

The spelling of 1903065842 in words is "one billion, nine hundred three million, sixty-five thousand, eight hundred forty-two".