1390786848 has 120 divisors (see below), whose sum is σ = 4462199280. Its totient is φ = 421441920.

The previous prime is 1390786841. The next prime is 1390786849. The reversal of 1390786848 is 8486870931.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1390786794 and 1390786803.

It is not an unprimeable number, because it can be changed into a prime (1390786841) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4123 + ... + 52901.

It is an arithmetic number, because the mean of its divisors is an integer number (37184994).

Almost surely, 2^1390786848 is an apocalyptic number.

1390786848 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1390786848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2231099640).

1390786848 is an abundant number, since it is smaller than the sum of its proper divisors (3071412432).

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

1390786848 is a wasteful number, since it uses less digits than its factorization.

1390786848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48812 (or 48795 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The square root of 1390786848 is about 37293.2547252181. The cubic root of 1390786848 is about 1116.2295746921.

The spelling of 1390786848 in words is "one billion, three hundred ninety million, seven hundred eighty-six thousand, eight hundred forty-eight".