1402331636 has 12 divisors (see below), whose sum is σ = 2454342660. Its totient is φ = 701090880.

The previous prime is 1402331549. The next prime is 1402331639. The reversal of 1402331636 is 6361332041.

It can be written as a sum of positive squares in 2 ways, for example, as 1193702500 + 208629136 = 34550^2 + 14444^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1402331599 and 1402331608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402331639) 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 3 ways as a sum of consecutive naturals, for example, 62666 + ... + 82046.

It is an arithmetic number, because the mean of its divisors is an integer number (204528555).

Almost surely, 2^1402331636 is an apocalyptic number.

It is an amenable number.

1402331636 is a deficient number, since it is larger than the sum of its proper divisors (1052011024).

1402331636 is a wasteful number, since it uses less digits than its factorization.

1402331636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37474 (or 37472 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 1402331636 is about 37447.7187022120. The cubic root of 1402331636 is about 1119.3096393921.

Adding to 1402331636 its reverse (6361332041), we get a palindrome (7763663677).

The spelling of 1402331636 in words is "one billion, four hundred two million, three hundred thirty-one thousand, six hundred thirty-six".