199137660 has 96 divisors (see below), whose sum is σ = 596538432. Its totient is φ = 49459200.

The previous prime is 199137629. The next prime is 199137661. The reversal of 199137660 is 66731991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199137661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102054 + ... + 103986.

It is an arithmetic number, because the mean of its divisors is an integer number (6213942).

Almost surely, 2^199137660 is an apocalyptic number.

199137660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199137660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298269216).

199137660 is an abundant number, since it is smaller than the sum of its proper divisors (397400772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199137660 is a wasteful number, since it uses less digits than its factorization.

199137660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063 (or 2061 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 199137660 is about 14111.6143654792. The cubic root of 199137660 is about 583.9618375951.

The spelling of 199137660 in words is "one hundred ninety-nine million, one hundred thirty-seven thousand, six hundred sixty".