1387346808 has 64 divisors (see below), whose sum is σ = 3530880000. Its totient is φ = 454177152.

The previous prime is 1387346773. The next prime is 1387346809. The reversal of 1387346808 is 8086437831.

1387346808 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387346809) 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, 375466 + ... + 379142.

It is an arithmetic number, because the mean of its divisors is an integer number (55170000).

Almost surely, 2^1387346808 is an apocalyptic number.

It is an amenable number.

1387346808 is an abundant number, since it is smaller than the sum of its proper divisors (2143533192).

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

1387346808 is a wasteful number, since it uses less digits than its factorization.

1387346808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3964 (or 3960 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The square root of 1387346808 is about 37247.1046928483. The cubic root of 1387346808 is about 1115.3085026481.

It can be divided in two parts, 1387 and 346808, that added together give a triangular number (348195 = T₈₃₄).

The spelling of 1387346808 in words is "one billion, three hundred eighty-seven million, three hundred forty-six thousand, eight hundred eight".