1985053263 has 16 divisors (see below), whose sum is σ = 2804368896. Its totient is φ = 1244661120.

The previous prime is 1985053261. The next prime is 1985053267. The reversal of 1985053263 is 3623505891.

It is not a de Polignac number, because 1985053263 - 2¹ = 1985053261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1985053261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65370 + ... + 90792.

It is an arithmetic number, because the mean of its divisors is an integer number (175273056).

Almost surely, 2^1985053263 is an apocalyptic number.

1985053263 is a deficient number, since it is larger than the sum of its proper divisors (819315633).

1985053263 is a wasteful number, since it uses less digits than its factorization.

1985053263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26974.

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 1985053263 is about 44553.9365600841. The cubic root of 1985053263 is about 1256.7745804913.

The spelling of 1985053263 in words is "one billion, nine hundred eighty-five million, fifty-three thousand, two hundred sixty-three".