1999193241 has 4 divisors (see below), whose sum is σ = 2665590992. Its totient is φ = 1332795492.

The previous prime is 1999193237. The next prime is 1999193267. The reversal of 1999193241 is 1423919991.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1999193241 - 2² = 1999193237 is a prime.

It is a super-2 number, since 2×1999193241² = 7993547229720168162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1999193041) 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, 333198871 + ... + 333198876.

It is an arithmetic number, because the mean of its divisors is an integer number (666397748).

Almost surely, 2^1999193241 is an apocalyptic number.

It is an amenable number.

1999193241 is a deficient number, since it is larger than the sum of its proper divisors (666397751).

1999193241 is an equidigital number, since it uses as much as digits as its factorization.

1999193241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666397750.

The product of its digits is 157464, while the sum is 48.

The square root of 1999193241 is about 44712.3388003804. The cubic root of 1999193241 is about 1259.7516183367.

The spelling of 1999193241 in words is "one billion, nine hundred ninety-nine million, one hundred ninety-three thousand, two hundred forty-one".