1203748989 has 4 divisors (see below), whose sum is σ = 1604998656. Its totient is φ = 802499324.

The previous prime is 1203748979. The next prime is 1203749033. The reversal of 1203748989 is 9898473021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1203748989 - 2¹¹ = 1203746941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203748979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200624829 + ... + 200624834.

It is an arithmetic number, because the mean of its divisors is an integer number (401249664).

Almost surely, 2^1203748989 is an apocalyptic number.

It is an amenable number.

1203748989 is a deficient number, since it is larger than the sum of its proper divisors (401249667).

1203748989 is an equidigital number, since it uses as much as digits as its factorization.

1203748989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401249666.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 1203748989 is about 34695.0859488775. The cubic root of 1203748989 is about 1063.7640563216.

The spelling of 1203748989 in words is "one billion, two hundred three million, seven hundred forty-eight thousand, nine hundred eighty-nine".