1351386772 has 12 divisors (see below), whose sum is σ = 2377181716. Its totient is φ = 672192000.

The previous prime is 1351386737. The next prime is 1351386787. The reversal of 1351386772 is 2776831531.

It can be written as a sum of positive squares in 2 ways, for example, as 94400656 + 1256986116 = 9716^2 + 35454^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 874479 + ... + 876022.

Almost surely, 2^1351386772 is an apocalyptic number.

It is an amenable number.

1351386772 is a deficient number, since it is larger than the sum of its proper divisors (1025794944).

1351386772 is a wasteful number, since it uses less digits than its factorization.

1351386772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750698 (or 1750696 counting only the distinct ones).

The product of its digits is 211680, while the sum is 43.

The square root of 1351386772 is about 36761.2128744415. The cubic root of 1351386772 is about 1105.5877579899.

The spelling of 1351386772 in words is "one billion, three hundred fifty-one million, three hundred eighty-six thousand, seven hundred seventy-two".