1604855941 has 12 divisors (see below), whose sum is σ = 1753765860. Its totient is φ = 1467797760.

The previous prime is 1604855899. The next prime is 1604855951. The reversal of 1604855941 is 1495584061.

It can be written as a sum of positive squares in 6 ways, for example, as 16434916 + 1588421025 = 4054^2 + 39855^2 .

It is not a de Polignac number, because 1604855941 - 2²³ = 1596467333 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 (1604855951) 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, 25140 + ... + 61981.

It is an arithmetic number, because the mean of its divisors is an integer number (146147155).

Almost surely, 2^1604855941 is an apocalyptic number.

It is an amenable number.

1604855941 is a deficient number, since it is larger than the sum of its proper divisors (148909919).

1604855941 is a wasteful number, since it uses less digits than its factorization.

1604855941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87256 (or 87243 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 1604855941 is about 40060.6532772495. The cubic root of 1604855941 is about 1170.7891384063.

The spelling of 1604855941 in words is "one billion, six hundred four million, eight hundred fifty-five thousand, nine hundred forty-one".