1387501012 has 6 divisors (see below), whose sum is σ = 2428126778. Its totient is φ = 693750504.

The previous prime is 1387501009. The next prime is 1387501021. The reversal of 1387501012 is 2101057831.

It can be written as a sum of positive squares in only one way, i.e., 1222481296 + 165019716 = 34964^2 + 12846^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173437623 + ... + 173437630.

Almost surely, 2^1387501012 is an apocalyptic number.

It is an amenable number.

1387501012 is a deficient number, since it is larger than the sum of its proper divisors (1040625766).

1387501012 is a wasteful number, since it uses less digits than its factorization.

1387501012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346875257 (or 346875255 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 1387501012 is about 37249.1746485744. The cubic root of 1387501012 is about 1115.3498234050.

Adding to 1387501012 its reverse (2101057831), we get a palindrome (3488558843).

The spelling of 1387501012 in words is "one billion, three hundred eighty-seven million, five hundred one thousand, twelve".