1387526396 has 18 divisors (see below), whose sum is σ = 2509032960. Its totient is φ = 671381880.

The previous prime is 1387526389. The next prime is 1387526401. The reversal of 1387526396 is 6936257831.

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 5 ways as a sum of consecutive naturals, for example, 176636 + ... + 184323.

It is an arithmetic number, because the mean of its divisors is an integer number (139390720).

Almost surely, 2^1387526396 is an apocalyptic number.

It is an amenable number.

1387526396 is a deficient number, since it is larger than the sum of its proper divisors (1121506564).

1387526396 is a wasteful number, since it uses less digits than its factorization.

1387526396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361025 (or 360992 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 50.

The square root of 1387526396 is about 37249.5153793979. The cubic root of 1387526396 is about 1115.3566250498.

The spelling of 1387526396 in words is "one billion, three hundred eighty-seven million, five hundred twenty-six thousand, three hundred ninety-six".