1849929406957 has 4 divisors (see below), whose sum is σ = 1877540293696. Its totient is φ = 1822318520220.

The previous prime is 1849929406903. The next prime is 1849929406967. The reversal of 1849929406957 is 7596049299481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1849929406957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1849929406957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1849929406967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13805443269 + ... + 13805443402.

It is an arithmetic number, because the mean of its divisors is an integer number (469385073424).

Almost surely, 2^{1849929406957} is an apocalyptic number.

It is an amenable number.

1849929406957 is a deficient number, since it is larger than the sum of its proper divisors (27610886739).

1849929406957 is an equidigital number, since it uses as much as digits as its factorization.

1849929406957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27610886738.

The product of its (nonzero) digits is 352719360, while the sum is 73.

The spelling of 1849929406957 in words is "one trillion, eight hundred forty-nine billion, nine hundred twenty-nine million, four hundred six thousand, nine hundred fifty-seven".