1942199447 has 4 divisors (see below), whose sum is σ = 1987366920. Its totient is φ = 1897031976.

The previous prime is 1942199423. The next prime is 1942199453. The reversal of 1942199447 is 7449912491.

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

It is a cyclic number.

It is not a de Polignac number, because 1942199447 - 2¹² = 1942195351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1942199395 and 1942199404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1942199477) 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, 22583672 + ... + 22583757.

It is an arithmetic number, because the mean of its divisors is an integer number (496841730).

Almost surely, 2^1942199447 is an apocalyptic number.

1942199447 is a deficient number, since it is larger than the sum of its proper divisors (45167473).

1942199447 is an equidigital number, since it uses as much as digits as its factorization.

1942199447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45167472.

The product of its digits is 653184, while the sum is 50.

The square root of 1942199447 is about 44070.3919542361. The cubic root of 1942199447 is about 1247.6648557575.

The spelling of 1942199447 in words is "one billion, nine hundred forty-two million, one hundred ninety-nine thousand, four hundred forty-seven".