1387626256950 has 48 divisors (see below), whose sum is σ = 3534321594000. Its totient is φ = 360032757120.

The previous prime is 1387626256927. The next prime is 1387626256981. The reversal of 1387626256950 is 596526267831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125005825 + ... + 125016924.

It is an arithmetic number, because the mean of its divisors is an integer number (73631699875).

Almost surely, 2^{1387626256950} is an apocalyptic number.

1387626256950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1387626256950 is an abundant number, since it is smaller than the sum of its proper divisors (2146695337050).

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

1387626256950 is a wasteful number, since it uses less digits than its factorization.

1387626256950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250022801 (or 250022796 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 60.

The spelling of 1387626256950 in words is "one trillion, three hundred eighty-seven billion, six hundred twenty-six million, two hundred fifty-six thousand, nine hundred fifty".