1989265748 has 12 divisors (see below), whose sum is σ = 3546898740. Its totient is φ = 975866112.

The previous prime is 1989265697. The next prime is 1989265787. The reversal of 1989265748 is 8475629891.

It can be written as a sum of positive squares in 2 ways, for example, as 1718268304 + 270997444 = 41452^2 + 16462^2 .

It is a congruent 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, 4691453 + ... + 4691876.

It is an arithmetic number, because the mean of its divisors is an integer number (295574895).

Almost surely, 2^1989265748 is an apocalyptic number.

It is an amenable number.

1989265748 is a deficient number, since it is larger than the sum of its proper divisors (1557632992).

1989265748 is a wasteful number, since it uses less digits than its factorization.

1989265748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9383386 (or 9383384 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 59.

The square root of 1989265748 is about 44601.1854999393. The cubic root of 1989265748 is about 1257.6629535595.

The spelling of 1989265748 in words is "one billion, nine hundred eighty-nine million, two hundred sixty-five thousand, seven hundred forty-eight".