1642691407903 has 96 divisors (see below), whose sum is σ = 2226776227200. Its totient is φ = 1197427359744.

The previous prime is 1642691407867. The next prime is 1642691407909. The reversal of 1642691407903 is 3097041962461.

It is not a de Polignac number, because 1642691407903 - 2³³ = 1634101473311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642691407909) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 183968143 + ... + 183977071.

It is an arithmetic number, because the mean of its divisors is an integer number (23195585700).

Almost surely, 2^{1642691407903} is an apocalyptic number.

1642691407903 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1642691407903 is a deficient number, since it is larger than the sum of its proper divisors (584084819297).

1642691407903 is a wasteful number, since it uses less digits than its factorization.

1642691407903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9441 (or 9434 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 52.

The spelling of 1642691407903 in words is "one trillion, six hundred forty-two billion, six hundred ninety-one million, four hundred seven thousand, nine hundred three".