1371406806 has 72 divisors (see below), whose sum is σ = 3770759304. Its totient is φ = 356207040.

The previous prime is 1371406801. The next prime is 1371406831. The reversal of 1371406806 is 6086041731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1371406801) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 60975 + ... + 80378.

It is an arithmetic number, because the mean of its divisors is an integer number (52371657).

Almost surely, 2^1371406806 is an apocalyptic number.

1371406806 is an abundant number, since it is smaller than the sum of its proper divisors (2399352498).

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

1371406806 is a wasteful number, since it uses less digits than its factorization.

1371406806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141386 (or 141376 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1371406806 is about 37032.5101228637. The cubic root of 1371406806 is about 1111.0205709832.

The spelling of 1371406806 in words is "one billion, three hundred seventy-one million, four hundred six thousand, eight hundred six".