1649792903 has 4 divisors (see below), whose sum is σ = 1799774088. Its totient is φ = 1499811720.

The previous prime is 1649792899. The next prime is 1649792917. The reversal of 1649792903 is 3092979461.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1649792903 - 2² = 1649792899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649792993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74990576 + ... + 74990597.

It is an arithmetic number, because the mean of its divisors is an integer number (449943522).

Almost surely, 2^1649792903 is an apocalyptic number.

1649792903 is a deficient number, since it is larger than the sum of its proper divisors (149981185).

1649792903 is a wasteful number, since it uses less digits than its factorization.

1649792903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149981184.

The product of its (nonzero) digits is 734832, while the sum is 50.

The square root of 1649792903 is about 40617.6427553348. The cubic root of 1649792903 is about 1181.6163101299.

The spelling of 1649792903 in words is "one billion, six hundred forty-nine million, seven hundred ninety-two thousand, nine hundred three".