1383000640 has 56 divisors (see below), whose sum is σ = 3763743552. Its totient is φ = 474170880.

The previous prime is 1383000617. The next prime is 1383000653. The reversal of 1383000640 is 460003831.

It is a tau number, because it is divible by the number of its divisors (56).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306466 + ... + 310945.

Almost surely, 2^1383000640 is an apocalyptic number.

1383000640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1383000640 is an abundant number, since it is smaller than the sum of its proper divisors (2380742912).

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

1383000640 is an equidigital number, since it uses as much as digits as its factorization.

1383000640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617435 (or 617425 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1383000640 is about 37188.7165683356. The cubic root of 1383000640 is about 1114.1426348957.

The spelling of 1383000640 in words is "one billion, three hundred eighty-three million, six hundred forty", and thus it is an aban number.