1986748444 has 6 divisors (see below), whose sum is σ = 3476809784. Its totient is φ = 993374220.

The previous prime is 1986748427. The next prime is 1986748447. The reversal of 1986748444 is 4448476891.

It is a super-2 number, since 2×1986748444² = 7894338759472842272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1986748447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248343552 + ... + 248343559.

Almost surely, 2^1986748444 is an apocalyptic number.

It is an amenable number.

1986748444 is a deficient number, since it is larger than the sum of its proper divisors (1490061340).

1986748444 is a wasteful number, since it uses less digits than its factorization.

1986748444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496687115 (or 496687113 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 55.

The square root of 1986748444 is about 44572.9564197844. The cubic root of 1986748444 is about 1257.1322290350.

The spelling of 1986748444 in words is "one billion, nine hundred eighty-six million, seven hundred forty-eight thousand, four hundred forty-four".