1985208021034 has 24 divisors (see below), whose sum is σ = 3591757457568. Its totient is φ = 806024307240.

The previous prime is 1985208021023. The next prime is 1985208021079. The reversal of 1985208021034 is 4301208025891.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196394632 + ... + 196404739.

It is an arithmetic number, because the mean of its divisors is an integer number (149656560732).

Almost surely, 2^{1985208021034} is an apocalyptic number.

1985208021034 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1985208021034 is a deficient number, since it is larger than the sum of its proper divisors (1606549436534).

1985208021034 is a wasteful number, since it uses less digits than its factorization.

1985208021034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392799418 (or 392799399 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 1985208021034 in words is "one trillion, nine hundred eighty-five billion, two hundred eight million, twenty-one thousand, thirty-four".