1604213829 has 12 divisors (see below), whose sum is σ = 2403020256. Its totient is φ = 1069475724.

The previous prime is 1604213803. The next prime is 1604213869. The reversal of 1604213829 is 9283124061.

1604213829 is a `hidden beast` number, since 1 + 604 + 21 + 3 + 8 + 29 = 666.

It is not a de Polignac number, because 1604213829 - 2⁵ = 1604213797 is a prime.

It is a super-3 number, since 3×1604213829³ (a number of 29 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1604213793 and 1604213802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604213869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3300609 + ... + 3301094.

It is an arithmetic number, because the mean of its divisors is an integer number (200251688).

Almost surely, 2^1604213829 is an apocalyptic number.

It is an amenable number.

1604213829 is a deficient number, since it is larger than the sum of its proper divisors (798806427).

1604213829 is an frugal number, since it uses more digits than its factorization.

1604213829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6601718 (or 6601706 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1604213829 is about 40052.6382277123. The cubic root of 1604213829 is about 1170.6329711097.

The spelling of 1604213829 in words is "one billion, six hundred four million, two hundred thirteen thousand, eight hundred twenty-nine".