130019999 has 4 divisors (see below), whose sum is σ = 131960664. Its totient is φ = 128079336.

The previous prime is 130019977. The next prime is 130020013. The reversal of 130019999 is 999910031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130019999 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 (130019969) 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, 970232 + ... + 970365.

It is an arithmetic number, because the mean of its divisors is an integer number (32990166).

Almost surely, 2^130019999 is an apocalyptic number.

130019999 is a deficient number, since it is larger than the sum of its proper divisors (1940665).

130019999 is an equidigital number, since it uses as much as digits as its factorization.

130019999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940664.

The product of its (nonzero) digits is 19683, while the sum is 41.

The square root of 130019999 is about 11402.6312314308. The cubic root of 130019999 is about 506.6056777254.

The spelling of 130019999 in words is "one hundred thirty million, nineteen thousand, nine hundred ninety-nine".