1990000597 has 8 divisors (see below), whose sum is σ = 2153849600. Its totient is φ = 1827690480.

The previous prime is 1990000547. The next prime is 1990000627. The reversal of 1990000597 is 7950000991.

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 1990000597 - 2⁷ = 1990000469 is a prime.

It is a Duffinian number.

1990000597 is a modest number, since divided by 597 gives 199 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1990000517) 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, 382029 + ... + 387202.

It is an arithmetic number, because the mean of its divisors is an integer number (269231200).

Almost surely, 2^1990000597 is an apocalyptic number.

It is an amenable number.

1990000597 is a deficient number, since it is larger than the sum of its proper divisors (163849003).

1990000597 is a wasteful number, since it uses less digits than its factorization.

1990000597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769443.

The product of its (nonzero) digits is 25515, while the sum is 40.

The square root of 1990000597 is about 44609.4227378028. The cubic root of 1990000597 is about 1257.8177977253.

The spelling of 1990000597 in words is "one billion, nine hundred ninety million, five hundred ninety-seven", and thus it is an aban number.