1316661906 has 32 divisors (see below), whose sum is σ = 3043336320. Its totient is φ = 371961216.

The previous prime is 1316661889. The next prime is 1316661937. The reversal of 1316661906 is 6091666131.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172381 + ... + 179856.

It is an arithmetic number, because the mean of its divisors is an integer number (95104260).

Almost surely, 2^1316661906 is an apocalyptic number.

1316661906 is an abundant number, since it is smaller than the sum of its proper divisors (1726674414).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1316661906 is a wasteful number, since it uses less digits than its factorization.

1316661906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352338.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 1316661906 is about 36285.8361623375. The cubic root of 1316661906 is about 1096.0358430612.

The spelling of 1316661906 in words is "one billion, three hundred sixteen million, six hundred sixty-one thousand, nine hundred six".