1985497326 has 64 divisors (see below), whose sum is σ = 4454419200. Its totient is φ = 655540128.

The previous prime is 1985497313. The next prime is 1985497361. The reversal of 1985497326 is 6237945891.

1985497326 is a `hidden beast` number, since 1 + 9 + 8 + 549 + 73 + 26 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3796101 + ... + 3796623.

It is an arithmetic number, because the mean of its divisors is an integer number (69600300).

Almost surely, 2^1985497326 is an apocalyptic number.

1985497326 is an abundant number, since it is smaller than the sum of its proper divisors (2468921874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1985497326 is a wasteful number, since it uses less digits than its factorization.

1985497326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070 (or 1064 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 1985497326 is about 44558.9197131169. The cubic root of 1985497326 is about 1256.8682883850.

The spelling of 1985497326 in words is "one billion, nine hundred eighty-five million, four hundred ninety-seven thousand, three hundred twenty-six".