2017191957 has 16 divisors (see below), whose sum is σ = 2948851200. Its totient is φ = 1216393200.

The previous prime is 2017191907. The next prime is 2017191959. The reversal of 2017191957 is 7591917102.

2017191957 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2017191957 - 2¹⁸ = 2016929813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2017191959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147019 + ... + 160152.

It is an arithmetic number, because the mean of its divisors is an integer number (184303200).

Almost surely, 2^2017191957 is an apocalyptic number.

It is an amenable number.

2017191957 is a deficient number, since it is larger than the sum of its proper divisors (931659243).

2017191957 is a wasteful number, since it uses less digits than its factorization.

2017191957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307384.

The product of its (nonzero) digits is 39690, while the sum is 42.

The square root of 2017191957 is about 44913.1601760553. The cubic root of 2017191957 is about 1263.5208396940.

The spelling of 2017191957 in words is "two billion, seventeen million, one hundred ninety-one thousand, nine hundred fifty-seven".