1934447656899 has 4 divisors (see below), whose sum is σ = 2579263542536. Its totient is φ = 1289631771264.

The previous prime is 1934447656891. The next prime is 1934447656927. The reversal of 1934447656899 is 9986567444391.

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

It is not a de Polignac number, because 1934447656899 - 2³ = 1934447656891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1934447656899.

It is not an unprimeable number, because it can be changed into a prime (1934447656891) 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, 322407942814 + ... + 322407942819.

It is an arithmetic number, because the mean of its divisors is an integer number (644815885634).

Almost surely, 2^{1934447656899} is an apocalyptic number.

1934447656899 is a deficient number, since it is larger than the sum of its proper divisors (644815885637).

1934447656899 is an equidigital number, since it uses as much as digits as its factorization.

1934447656899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644815885636.

The product of its digits is 1410877440, while the sum is 75.

The spelling of 1934447656899 in words is "one trillion, nine hundred thirty-four billion, four hundred forty-seven million, six hundred fifty-six thousand, eight hundred ninety-nine".