1829997389 has 8 divisors (see below), whose sum is σ = 1997599968. Its totient is φ = 1662601360.

The previous prime is 1829997373. The next prime is 1829997439. The reversal of 1829997389 is 9837999281.

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

It is a cyclic number.

It is not a de Polignac number, because 1829997389 - 2⁴ = 1829997373 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 (1829997089) 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, 32807 + ... + 68820.

It is an arithmetic number, because the mean of its divisors is an integer number (249699996).

Almost surely, 2^1829997389 is an apocalyptic number.

It is an amenable number.

1829997389 is a deficient number, since it is larger than the sum of its proper divisors (167602579).

1829997389 is a wasteful number, since it uses less digits than its factorization.

1829997389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103275.

The product of its digits is 17635968, while the sum is 65.

The square root of 1829997389 is about 42778.4687547369. The cubic root of 1829997389 is about 1223.1606189671.

The spelling of 1829997389 in words is "one billion, eight hundred twenty-nine million, nine hundred ninety-seven thousand, three hundred eighty-nine".