1390363648 has 44 divisors (see below), whose sum is σ = 2793745600. Its totient is φ = 691587072.

The previous prime is 1390363643. The next prime is 1390363657. The reversal of 1390363648 is 8463630931.

It is a super-2 number, since 2×1390363648² = 3866222147359735808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1390363643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200365 + ... + 207187.

Almost surely, 2^1390363648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1390363648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1396872800).

1390363648 is an abundant number, since it is smaller than the sum of its proper divisors (1403381952).

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

1390363648 is an equidigital number, since it uses as much as digits as its factorization.

1390363648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7042 (or 7024 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 43.

The square root of 1390363648 is about 37287.5803452034. The cubic root of 1390363648 is about 1116.1163447175.

The spelling of 1390363648 in words is "one billion, three hundred ninety million, three hundred sixty-three thousand, six hundred forty-eight".