1985073723 has 20 divisors (see below), whose sum is σ = 2983134000. Its totient is φ = 1315449072.

The previous prime is 1985073721. The next prime is 1985073781. The reversal of 1985073723 is 3273705891.

It is a happy number.

1985073723 is a `hidden beast` number, since 1 + 98 + 507 + 37 + 23 = 666.

It is not a de Polignac number, because 1985073723 - 2¹ = 1985073721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1985073721) 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 19 ways as a sum of consecutive naturals, for example, 59848 + ... + 86901.

It is an arithmetic number, because the mean of its divisors is an integer number (149156700).

Almost surely, 2^1985073723 is an apocalyptic number.

1985073723 is a deficient number, since it is larger than the sum of its proper divisors (998060277).

1985073723 is a wasteful number, since it uses less digits than its factorization.

1985073723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146928 (or 146919 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 1985073723 is about 44554.1661688332. The cubic root of 1985073723 is about 1256.7788983468.

The spelling of 1985073723 in words is "one billion, nine hundred eighty-five million, seventy-three thousand, seven hundred twenty-three".