1387500004 has 48 divisors (see below), whose sum is σ = 2795446080. Its totient is φ = 595952640.

The previous prime is 1387499957. The next prime is 1387500007. The reversal of 1387500004 is 4000057831.

It is a super-2 number, since 2×1387500004² = 3850312522200000032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1387500007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360072 + ... + 363904.

It is an arithmetic number, because the mean of its divisors is an integer number (58238460).

Almost surely, 2^1387500004 is an apocalyptic number.

It is an amenable number.

1387500004 is an abundant number, since it is smaller than the sum of its proper divisors (1407946076).

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

1387500004 is a wasteful number, since it uses less digits than its factorization.

1387500004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4300 (or 4298 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1387500004 is about 37249.1611180708. The cubic root of 1387500004 is about 1115.3495533096.

Adding to 1387500004 its reverse (4000057831), we get a palindrome (5387557835).

The spelling of 1387500004 in words is "one billion, three hundred eighty-seven million, five hundred thousand, four".