1684539029 has 4 divisors (see below), whose sum is σ = 1685279820. Its totient is φ = 1683798240.

The previous prime is 1684539023. The next prime is 1684539047. The reversal of 1684539029 is 9209354861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 850888900 + 833650129 = 29170^2 + 28873^2 .

It is a cyclic number.

It is not a de Polignac number, because 1684539029 - 2⁴ = 1684539013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1684539023) 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, 366974 + ... + 371535.

It is an arithmetic number, because the mean of its divisors is an integer number (421319955).

Almost surely, 2^1684539029 is an apocalyptic number.

It is an amenable number.

1684539029 is a deficient number, since it is larger than the sum of its proper divisors (740791).

1684539029 is an equidigital number, since it uses as much as digits as its factorization.

1684539029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740790.

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 1684539029 is about 41043.1361983950. The cubic root of 1684539029 is about 1189.8540481970.

The spelling of 1684539029 in words is "one billion, six hundred eighty-four million, five hundred thirty-nine thousand, twenty-nine".