1406316644 has 12 divisors (see below), whose sum is σ = 2461584384. Its totient is φ = 703006824.

The previous prime is 1406316629. The next prime is 1406316671. The reversal of 1406316644 is 4466136041.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15524 + ... + 55259.

It is an arithmetic number, because the mean of its divisors is an integer number (205132032).

Almost surely, 2^1406316644 is an apocalyptic number.

It is an amenable number.

1406316644 is a deficient number, since it is larger than the sum of its proper divisors (1055267740).

1406316644 is a wasteful number, since it uses less digits than its factorization.

1406316644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75754 (or 75752 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 1406316644 is about 37500.8885761391. Note that the first 3 decimals coincide. The cubic root of 1406316644 is about 1120.3688846553.

The spelling of 1406316644 in words is "one billion, four hundred six million, three hundred sixteen thousand, six hundred forty-four".