1245928789 has 8 divisors (see below), whose sum is σ = 1429828928. Its totient is φ = 1063506240.

The previous prime is 1245928729. The next prime is 1245928841. The reversal of 1245928789 is 9878295421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1245928789 - 2²⁵ = 1212374357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245928729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367587 + ... + 370960.

It is an arithmetic number, because the mean of its divisors is an integer number (178728616).

Almost surely, 2^1245928789 is an apocalyptic number.

It is an amenable number.

1245928789 is a deficient number, since it is larger than the sum of its proper divisors (183900139).

1245928789 is an equidigital number, since it uses as much as digits as its factorization.

1245928789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738795.

The product of its digits is 2903040, while the sum is 55.

The square root of 1245928789 is about 35297.7164842147. The cubic root of 1245928789 is about 1076.0465852907.

The spelling of 1245928789 in words is "one billion, two hundred forty-five million, nine hundred twenty-eight thousand, seven hundred eighty-nine".