1985613332 has 12 divisors (see below), whose sum is σ = 3499823040. Its totient is φ = 985663896.

The previous prime is 1985613323. The next prime is 1985613337. The reversal of 1985613332 is 2333165891.

It is a happy number.

It is a super-2 number, since 2×1985613332² = 7885320608432284448, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1985613332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1985613337) 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, 1785068 + ... + 1786179.

It is an arithmetic number, because the mean of its divisors is an integer number (291651920).

Almost surely, 2^1985613332 is an apocalyptic number.

It is an amenable number.

1985613332 is a deficient number, since it is larger than the sum of its proper divisors (1514209708).

1985613332 is a wasteful number, since it uses less digits than its factorization.

1985613332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571390 (or 3571388 counting only the distinct ones).

The product of its digits is 116640, while the sum is 41.

The square root of 1985613332 is about 44560.2214087857. The cubic root of 1985613332 is about 1256.8927661185.

The spelling of 1985613332 in words is "one billion, nine hundred eighty-five million, six hundred thirteen thousand, three hundred thirty-two".