1388630000 has 50 divisors (see below), whose sum is σ = 3362036304. Its totient is φ = 555448000.

The previous prime is 1388629987. The next prime is 1388630099. The reversal of 1388630000 is 368831.

It is a tau number, because it is divible by the number of its divisors (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 59432 + ... + 79431.

Almost surely, 2^1388630000 is an apocalyptic number.

1388630000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1388630000 is an abundant number, since it is smaller than the sum of its proper divisors (1973406304).

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

1388630000 is an equidigital number, since it uses as much as digits as its factorization.

1388630000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138891 (or 138870 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1388630000 is about 37264.3261041978. The cubic root of 1388630000 is about 1115.6522556615.

Adding to 1388630000 its reverse (368831), we get a palindrome (1388998831).

The spelling of 1388630000 in words is "one billion, three hundred eighty-eight million, six hundred thirty thousand".