1966269644 has 12 divisors (see below), whose sum is σ = 3622075800. Its totient is φ = 931390848.

The previous prime is 1966269619. The next prime is 1966269653. The reversal of 1966269644 is 4469626691.

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, 12935909 + ... + 12936060.

It is an arithmetic number, because the mean of its divisors is an integer number (301839650).

Almost surely, 2^1966269644 is an apocalyptic number.

It is an amenable number.

1966269644 is a deficient number, since it is larger than the sum of its proper divisors (1655806156).

1966269644 is a wasteful number, since it uses less digits than its factorization.

1966269644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25871992 (or 25871990 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 53.

The square root of 1966269644 is about 44342.6391185730. The cubic root of 1966269644 is about 1252.7979233473.

The spelling of 1966269644 in words is "one billion, nine hundred sixty-six million, two hundred sixty-nine thousand, six hundred forty-four".