193899130 has 8 divisors (see below), whose sum is σ = 349018452. Its totient is φ = 77559648.

The previous prime is 193899113. The next prime is 193899137. The reversal of 193899130 is 31998391.

It can be written as a sum of positive squares in 2 ways, for example, as 190964761 + 2934369 = 13819^2 + 1713^2 .

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

It is a super-2 number, since 2×193899130² = 75193745229513800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (193899137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9694947 + ... + 9694966.

Almost surely, 2^193899130 is an apocalyptic number.

193899130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

193899130 is a deficient number, since it is larger than the sum of its proper divisors (155119322).

193899130 is a wasteful number, since it uses less digits than its factorization.

193899130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19389920.

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 193899130 is about 13924.7667844025. The cubic root of 193899130 is about 578.7956877789.

The spelling of 193899130 in words is "one hundred ninety-three million, eight hundred ninety-nine thousand, one hundred thirty".