1387880050 has 12 divisors (see below), whose sum is σ = 2581456986. Its totient is φ = 555152000.

The previous prime is 1387880047. The next prime is 1387880059. The reversal of 1387880050 is 500887831.

It can be written as a sum of positive squares in 3 ways, for example, as 1288738201 + 99141849 = 35899^2 + 9957^2 .

It is a super-2 number, since 2×1387880050² = 3852422066376005000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1387879985 and 1387880012.

It is not an unprimeable number, because it can be changed into a prime (1387880059) 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 5 ways as a sum of consecutive naturals, for example, 13878751 + ... + 13878850.

Almost surely, 2^1387880050 is an apocalyptic number.

1387880050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1387880050 is a deficient number, since it is larger than the sum of its proper divisors (1193576936).

1387880050 is a wasteful number, since it uses less digits than its factorization.

1387880050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27757613 (or 27757608 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 1387880050 is about 37254.2621722669. The cubic root of 1387880050 is about 1115.4513780398.

The spelling of 1387880050 in words is "one billion, three hundred eighty-seven million, eight hundred eighty thousand, fifty".