1942089679 has 4 divisors (see below), whose sum is σ = 1983410784. Its totient is φ = 1900768576.

The previous prime is 1942089641. The next prime is 1942089683. The reversal of 1942089679 is 9769802491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9769802491 = 7561 ⋅1292131.

It is a cyclic number.

It is not a de Polignac number, because 1942089679 - 2⁹ = 1942089167 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 (1942089619) 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, 20660482 + ... + 20660575.

It is an arithmetic number, because the mean of its divisors is an integer number (495852696).

Almost surely, 2^1942089679 is an apocalyptic number.

1942089679 is a deficient number, since it is larger than the sum of its proper divisors (41321105).

1942089679 is an equidigital number, since it uses as much as digits as its factorization.

1942089679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41321104.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The square root of 1942089679 is about 44069.1465653693. The cubic root of 1942089679 is about 1247.6413504036.

The spelling of 1942089679 in words is "one billion, nine hundred forty-two million, eighty-nine thousand, six hundred seventy-nine".