1739985616 has 20 divisors (see below), whose sum is σ = 3487472100. Its totient is φ = 839992832.

The previous prime is 1739985607. The next prime is 1739985617. The reversal of 1739985616 is 6165899371.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 729000000 + 1010985616 = 27000^2 + 31796^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1739985617) 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, 1874521 + ... + 1875448.

It is an arithmetic number, because the mean of its divisors is an integer number (174373605).

Almost surely, 2^1739985616 is an apocalyptic number.

1739985616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1739985616 is an abundant number, since it is smaller than the sum of its proper divisors (1747486484).

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

1739985616 is a wasteful number, since it uses less digits than its factorization.

1739985616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3750006 (or 3750000 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 55.

The square root of 1739985616 is about 41713.1348138689. The cubic root of 1739985616 is about 1202.7680581171.

The spelling of 1739985616 in words is "one billion, seven hundred thirty-nine million, nine hundred eighty-five thousand, six hundred sixteen".