1402605646 has 32 divisors (see below), whose sum is σ = 2299752000. Its totient is φ = 637697280.

The previous prime is 1402605637. The next prime is 1402605649. The reversal of 1402605646 is 6465062041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402605649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 718680 + ... + 720628.

It is an arithmetic number, because the mean of its divisors is an integer number (71867250).

Almost surely, 2^1402605646 is an apocalyptic number.

1402605646 is a deficient number, since it is larger than the sum of its proper divisors (897146354).

1402605646 is a wasteful number, since it uses less digits than its factorization.

1402605646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2364.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 1402605646 is about 37451.3770908361. The cubic root of 1402605646 is about 1119.3825375218.

Adding to 1402605646 its reverse (6465062041), we get a palindrome (7867667687).

The spelling of 1402605646 in words is "one billion, four hundred two million, six hundred five thousand, six hundred forty-six".