1997383719 has 8 divisors (see below), whose sum is σ = 2672589952. Its totient is φ = 1326883320.

The previous prime is 1997383651. The next prime is 1997383741. The reversal of 1997383719 is 9173837991.

1997383719 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1997383719 - 2¹¹ = 1997381671 is a prime.

It is a super-2 number, since 2×1997383719² = 7979083441852541922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997383789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1175467 + ... + 1177164.

It is an arithmetic number, because the mean of its divisors is an integer number (334073744).

Almost surely, 2^1997383719 is an apocalyptic number.

1997383719 is a deficient number, since it is larger than the sum of its proper divisors (675206233).

1997383719 is a wasteful number, since it uses less digits than its factorization.

1997383719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2352917.

The product of its digits is 2571912, while the sum is 57.

The square root of 1997383719 is about 44692.0990668373. The cubic root of 1997383719 is about 1259.3714255792.

The spelling of 1997383719 in words is "one billion, nine hundred ninety-seven million, three hundred eighty-three thousand, seven hundred nineteen".