1829985436 has 12 divisors (see below), whose sum is σ = 3204221328. Its totient is φ = 914493632.

The previous prime is 1829985419. The next prime is 1829985439. The reversal of 1829985436 is 6345899281.

It is a super-2 number, since 2×1829985436² = 6697693391944220192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1829985439) 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, 116461 + ... + 131236.

It is an arithmetic number, because the mean of its divisors is an integer number (267018444).

Almost surely, 2^1829985436 is an apocalyptic number.

It is an amenable number.

1829985436 is a deficient number, since it is larger than the sum of its proper divisors (1374235892).

1829985436 is a wasteful number, since it uses less digits than its factorization.

1829985436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249548 (or 249546 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 55.

The square root of 1829985436 is about 42778.3290463758. The cubic root of 1829985436 is about 1223.1579558539.

The spelling of 1829985436 in words is "one billion, eight hundred twenty-nine million, nine hundred eighty-five thousand, four hundred thirty-six".