1934708989 has 4 divisors (see below), whose sum is σ = 1934825760. Its totient is φ = 1934592220.

The previous prime is 1934708981. The next prime is 1934709031. The reversal of 1934708989 is 9898074391.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9898074391 = 89 ⋅111214319.

It is a cyclic number.

It is not a de Polignac number, because 1934708989 - 2³ = 1934708981 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 (1934708981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28399 + ... + 68380.

It is an arithmetic number, because the mean of its divisors is an integer number (483706440).

Almost surely, 2^1934708989 is an apocalyptic number.

It is an amenable number.

1934708989 is a deficient number, since it is larger than the sum of its proper divisors (116771).

1934708989 is an equidigital number, since it uses as much as digits as its factorization.

1934708989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116770.

The product of its (nonzero) digits is 3919104, while the sum is 58.

The square root of 1934708989 is about 43985.3269738898. The cubic root of 1934708989 is about 1246.0588378390.

The spelling of 1934708989 in words is "one billion, nine hundred thirty-four million, seven hundred eight thousand, nine hundred eighty-nine".