1903664842 has 8 divisors (see below), whose sum is σ = 2857257216. Its totient is φ = 951245772.

The previous prime is 1903664827. The next prime is 1903664869. The reversal of 1903664842 is 2484663091.

It is a happy number.

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

It is an unprimeable number.

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, 289258 + ... + 295765.

It is an arithmetic number, because the mean of its divisors is an integer number (357157152).

Almost surely, 2^1903664842 is an apocalyptic number.

1903664842 is a deficient number, since it is larger than the sum of its proper divisors (953592374).

1903664842 is a wasteful number, since it uses less digits than its factorization.

1903664842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586652.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 1903664842 is about 43631.0078040836. The cubic root of 1903664842 is about 1239.3581576846.

The spelling of 1903664842 in words is "one billion, nine hundred three million, six hundred sixty-four thousand, eight hundred forty-two".