1640990173413 has 4 divisors (see below), whose sum is σ = 2187986897888. Its totient is φ = 1093993448940.

The previous prime is 1640990173399. The next prime is 1640990173463. The reversal of 1640990173413 is 3143710990461.

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 not a de Polignac number, because 1640990173413 - 2¹⁴ = 1640990157029 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 (1640990173463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273498362233 + ... + 273498362238.

It is an arithmetic number, because the mean of its divisors is an integer number (546996724472).

Almost surely, 2^{1640990173413} is an apocalyptic number.

It is an amenable number.

1640990173413 is a deficient number, since it is larger than the sum of its proper divisors (546996724475).

1640990173413 is an equidigital number, since it uses as much as digits as its factorization.

1640990173413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546996724474.

The product of its (nonzero) digits is 489888, while the sum is 48.

The spelling of 1640990173413 in words is "one trillion, six hundred forty billion, nine hundred ninety million, one hundred seventy-three thousand, four hundred thirteen".