1604135158 has 4 divisors (see below), whose sum is σ = 2406202740. Its totient is φ = 802067578.

The previous prime is 1604135149. The next prime is 1604135177. The reversal of 1604135158 is 8515314061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8515314061 = 53087 ⋅160403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401033788 + ... + 401033791.

It is an arithmetic number, because the mean of its divisors is an integer number (601550685).

Almost surely, 2^1604135158 is an apocalyptic number.

1604135158 is a deficient number, since it is larger than the sum of its proper divisors (802067582).

1604135158 is an equidigital number, since it uses as much as digits as its factorization.

1604135158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802067581.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 1604135158 is about 40051.6561205651. The cubic root of 1604135158 is about 1170.6138347639.

The spelling of 1604135158 in words is "one billion, six hundred four million, one hundred thirty-five thousand, one hundred fifty-eight".