1985085734 has 16 divisors (see below), whose sum is σ = 3021217056. Its totient is φ = 978028800.

The previous prime is 1985085719. The next prime is 1985085763. The reversal of 1985085734 is 4375805891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429524 + ... + 434120.

It is an arithmetic number, because the mean of its divisors is an integer number (188826066).

Almost surely, 2^1985085734 is an apocalyptic number.

1985085734 is a deficient number, since it is larger than the sum of its proper divisors (1036131322).

1985085734 is a wasteful number, since it uses less digits than its factorization.

1985085734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7711.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The square root of 1985085734 is about 44554.3009596156. The cubic root of 1985085734 is about 1256.7814331210.

The spelling of 1985085734 in words is "one billion, nine hundred eighty-five million, eighty-five thousand, seven hundred thirty-four".