1388265000 has 80 divisors (see below), whose sum is σ = 4336986720. Its totient is φ = 370200000.

The previous prime is 1388264989. The next prime is 1388265007. The reversal of 1388265000 is 5628831.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1388265007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 31276 + ... + 61275.

It is an arithmetic number, because the mean of its divisors is an integer number (54212334).

Almost surely, 2^1388265000 is an apocalyptic number.

1388265000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1388265000 is an abundant number, since it is smaller than the sum of its proper divisors (2948721720).

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

1388265000 is an equidigital number, since it uses as much as digits as its factorization.

1388265000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92580 (or 92561 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 1388265000 is about 37259.4283369995. The cubic root of 1388265000 is about 1115.5544977377.

The spelling of 1388265000 in words is "one billion, three hundred eighty-eight million, two hundred sixty-five thousand".