1390808016 has 80 divisors (see below), whose sum is σ = 4299238720. Its totient is φ = 427939200.

The previous prime is 1390808011. The next prime is 1390808051. The reversal of 1390808016 is 6108080931.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390808011) 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, 118210 + ... + 129441.

It is an arithmetic number, because the mean of its divisors is an integer number (53740484).

Almost surely, 2^1390808016 is an apocalyptic number.

1390808016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1390808016 is an abundant number, since it is smaller than the sum of its proper divisors (2908430704).

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

1390808016 is a wasteful number, since it uses less digits than its factorization.

1390808016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247681 (or 247669 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 1390808016 is about 37293.5385288122. The cubic root of 1390808016 is about 1116.2352377280.

Adding to 1390808016 its reverse (6108080931), we get a palindrome (7498888947).

The spelling of 1390808016 in words is "one billion, three hundred ninety million, eight hundred eight thousand, sixteen".