199740573 has 10 divisors (see below), whose sum is σ = 298378014. Its totient is φ = 133160328.

The previous prime is 199740571. The next prime is 199740589. The reversal of 199740573 is 375047991.

199740573 is a `hidden beast` number, since 1 + 9 + 9 + 74 + 0 + 573 = 666.

It can be written as a sum of positive squares in only one way, i.e., 191600964 + 8139609 = 13842^2 + 2853^2 .

It is not a de Polignac number, because 199740573 - 2¹ = 199740571 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199740571) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1232886 + ... + 1233047.

Almost surely, 2^199740573 is an apocalyptic number.

It is an amenable number.

199740573 is a deficient number, since it is larger than the sum of its proper divisors (98637441).

199740573 is an equidigital number, since it uses as much as digits as its factorization.

199740573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2465945 (or 2465936 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 199740573 is about 14132.9605178816. The cubic root of 199740573 is about 584.5505818508.

The spelling of 199740573 in words is "one hundred ninety-nine million, seven hundred forty thousand, five hundred seventy-three".