1388250360 has 384 divisors, whose sum is σ = 5536296000. Its totient is φ = 308302848.

The previous prime is 1388250349. The next prime is 1388250389. The reversal of 1388250360 is 630528831.

1388250360 is a `hidden beast` number, since 13 + 8 + 82 + 503 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1957686 + ... + 1958394.

Almost surely, 2^1388250360 is an apocalyptic number.

1388250360 is a gapful number since it is divisible by the number (10) 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 1388250360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2768148000).

1388250360 is an abundant number, since it is smaller than the sum of its proper divisors (4148045640).

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

1388250360 is a wasteful number, since it uses less digits than its factorization.

1388250360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780 (or 763 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1388250360 is about 37259.2318761404. The cubic root of 1388250360 is about 1115.5505763502.

The spelling of 1388250360 in words is "one billion, three hundred eighty-eight million, two hundred fifty thousand, three hundred sixty".