1316804645 has 16 divisors (see below), whose sum is σ = 1705630080. Its totient is φ = 970173504.

The previous prime is 1316804623. The next prime is 1316804647. The reversal of 1316804645 is 5464086131.

It is a cyclic number.

It is not a de Polignac number, because 1316804645 - 2⁸ = 1316804389 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1316804599 and 1316804608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316804647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5462 + ... + 51608.

It is an arithmetic number, because the mean of its divisors is an integer number (106601880).

Almost surely, 2^1316804645 is an apocalyptic number.

It is an amenable number.

1316804645 is a deficient number, since it is larger than the sum of its proper divisors (388825435).

1316804645 is a wasteful number, since it uses less digits than its factorization.

1316804645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46604.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 1316804645 is about 36287.8029784114. The cubic root of 1316804645 is about 1096.0754486239.

The spelling of 1316804645 in words is "one billion, three hundred sixteen million, eight hundred four thousand, six hundred forty-five".