1604158 has 16 divisors (see below), whose sum is σ = 2572416. Its totient is φ = 748440.

The previous prime is 1604149. The next prime is 1604167. The reversal of 1604158 is 8514061.

It is an interprime number because it is at equal distance from previous prime (1604149) and next prime (1604167).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1573 + ... + 2383.

It is an arithmetic number, because the mean of its divisors is an integer number (160776).

2^1604158 is an apocalyptic number.

1604158 is a deficient number, since it is larger than the sum of its proper divisors (968258).

1604158 is a wasteful number, since it uses less digits than its factorization.

1604158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1604158 is about 1266.5535914441. The cubic root of 1604158 is about 117.0619391036.

Subtracting 1604158 from its reverse (8514061), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 1604158 in words is "one million, six hundred four thousand, one hundred fifty-eight".