1942644497 has 4 divisors (see below), whose sum is σ = 1987822320. Its totient is φ = 1897466676.

The previous prime is 1942644479. The next prime is 1942644499. The reversal of 1942644497 is 7944462491.

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 1942644497 - 2⁶ = 1942644433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1942644499) 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, 22588847 + ... + 22588932.

It is an arithmetic number, because the mean of its divisors is an integer number (496955580).

Almost surely, 2^1942644497 is an apocalyptic number.

It is an amenable number.

1942644497 is a deficient number, since it is larger than the sum of its proper divisors (45177823).

1942644497 is an equidigital number, since it uses as much as digits as its factorization.

1942644497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45177822.

The product of its digits is 1741824, while the sum is 50.

The square root of 1942644497 is about 44075.4409734038. The cubic root of 1942644497 is about 1247.7601482084.

The spelling of 1942644497 in words is "one billion, nine hundred forty-two million, six hundred forty-four thousand, four hundred ninety-seven".