1720974369 has 8 divisors (see below), whose sum is σ = 2295307840. Its totient is φ = 1146978576.

The previous prime is 1720974319. The next prime is 1720974371. The reversal of 1720974369 is 9634790271.

It is a happy number.

1720974369 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 1720974369 - 2⁸ = 1720974113 is a prime.

It is a super-2 number, since 2×1720974369² = 5923505557509896322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1720974319) 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, 72277 + ... + 93090.

It is an arithmetic number, because the mean of its divisors is an integer number (286913480).

Almost surely, 2^1720974369 is an apocalyptic number.

It is an amenable number.

1720974369 is a deficient number, since it is larger than the sum of its proper divisors (574333471).

1720974369 is a wasteful number, since it uses less digits than its factorization.

1720974369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168839.

The product of its (nonzero) digits is 571536, while the sum is 48.

The square root of 1720974369 is about 41484.6281048776. The cubic root of 1720974369 is about 1198.3714874833.

The spelling of 1720974369 in words is "one billion, seven hundred twenty million, nine hundred seventy-four thousand, three hundred sixty-nine".