1953116617 has 4 divisors (see below), whose sum is σ = 1968495616. Its totient is φ = 1937737620.

The previous prime is 1953116579. The next prime is 1953116639. The reversal of 1953116617 is 7166113591.

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 1953116617 - 2¹⁵ = 1953083849 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 1953116617.

It is not an unprimeable number, because it can be changed into a prime (1953116677) 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, 7689309 + ... + 7689562.

It is an arithmetic number, because the mean of its divisors is an integer number (492123904).

Almost surely, 2^1953116617 is an apocalyptic number.

It is an amenable number.

1953116617 is a deficient number, since it is larger than the sum of its proper divisors (15378999).

1953116617 is a wasteful number, since it uses less digits than its factorization.

1953116617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15378998.

The product of its digits is 34020, while the sum is 40.

The square root of 1953116617 is about 44194.0789812391. The cubic root of 1953116617 is about 1249.9982116241.

The spelling of 1953116617 in words is "one billion, nine hundred fifty-three million, one hundred sixteen thousand, six hundred seventeen".