1928419166117 has 4 divisors (see below), whose sum is σ = 1937066785920. Its totient is φ = 1919771546316.

The previous prime is 1928419166101. The next prime is 1928419166123. The reversal of 1928419166117 is 7116619148291.

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 not a de Polignac number, because 1928419166117 - 2⁴ = 1928419166101 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 (1928419166017) 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, 4323809567 + ... + 4323810012.

It is an arithmetic number, because the mean of its divisors is an integer number (484266696480).

Almost surely, 2^{1928419166117} is an apocalyptic number.

It is an amenable number.

1928419166117 is a deficient number, since it is larger than the sum of its proper divisors (8647619803).

1928419166117 is an equidigital number, since it uses as much as digits as its factorization.

1928419166117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8647619802.

The product of its digits is 1306368, while the sum is 56.

The spelling of 1928419166117 in words is "one trillion, nine hundred twenty-eight billion, four hundred nineteen million, one hundred sixty-six thousand, one hundred seventeen".