1235948989899 has 8 divisors (see below), whose sum is σ = 1774695985552. Its totient is φ = 760583993760.

The previous prime is 1235948989831. The next prime is 1235948989901. The reversal of 1235948989899 is 9989898495321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1235948989899 - 2⁸ = 1235948989643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1235948989819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15845499832 + ... + 15845499909.

It is an arithmetic number, because the mean of its divisors is an integer number (221836998194).

Almost surely, 2^{1235948989899} is an apocalyptic number.

1235948989899 is a deficient number, since it is larger than the sum of its proper divisors (538746995653).

1235948989899 is a wasteful number, since it uses less digits than its factorization.

1235948989899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31690999757.

The product of its digits is 3627970560, while the sum is 84.

The spelling of 1235948989899 in words is "one trillion, two hundred thirty-five billion, nine hundred forty-eight million, nine hundred eighty-nine thousand, eight hundred ninety-nine".