1604313551 has 8 divisors (see below), whose sum is σ = 1641435840. Its totient is φ = 1567445152.

The previous prime is 1604313533. The next prime is 1604313619. The reversal of 1604313551 is 1553134061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1604313551 - 2²² = 1600119247 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 (1604313521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50660 + ... + 75993.

It is an arithmetic number, because the mean of its divisors is an integer number (205179480).

Almost surely, 2^1604313551 is an apocalyptic number.

1604313551 is a deficient number, since it is larger than the sum of its proper divisors (37122289).

1604313551 is a wasteful number, since it uses less digits than its factorization.

1604313551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126945.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 1604313551 is about 40053.8830951507. The cubic root of 1604313551 is about 1170.6572271119.

The spelling of 1604313551 in words is "one billion, six hundred four million, three hundred thirteen thousand, five hundred fifty-one".