1401666322 has 16 divisors (see below), whose sum is σ = 2507329152. Its totient is φ = 574596000.

The previous prime is 1401666319. The next prime is 1401666323. The reversal of 1401666322 is 2236661041.

It is not an unprimeable number, because it can be changed into a prime (1401666323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2176179 + ... + 2176822.

It is an arithmetic number, because the mean of its divisors is an integer number (156708072).

Almost surely, 2^1401666322 is an apocalyptic number.

1401666322 is a deficient number, since it is larger than the sum of its proper divisors (1105662830).

1401666322 is a wasteful number, since it uses less digits than its factorization.

1401666322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4353033.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 1401666322 is about 37438.8344102751. The cubic root of 1401666322 is about 1119.1325984900.

The spelling of 1401666322 in words is "one billion, four hundred one million, six hundred sixty-six thousand, three hundred twenty-two".