1966607228 has 6 divisors (see below), whose sum is σ = 3441562656. Its totient is φ = 983303612.

The previous prime is 1966607219. The next prime is 1966607257. The reversal of 1966607228 is 8227066691.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245825900 + ... + 245825907.

It is an arithmetic number, because the mean of its divisors is an integer number (573593776).

Almost surely, 2^1966607228 is an apocalyptic number.

It is an amenable number.

1966607228 is a deficient number, since it is larger than the sum of its proper divisors (1474955428).

1966607228 is a wasteful number, since it uses less digits than its factorization.

1966607228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491651811 (or 491651809 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 1966607228 is about 44346.4454945377. The cubic root of 1966607228 is about 1252.8696158428.

The spelling of 1966607228 in words is "one billion, nine hundred sixty-six million, six hundred seven thousand, two hundred twenty-eight".