1298743923 has 16 divisors (see below), whose sum is σ = 1740800000. Its totient is φ = 861269760.

The previous prime is 1298743913. The next prime is 1298743969. The reversal of 1298743923 is 3293478921.

It is not a de Polignac number, because 1298743923 - 2⁵ = 1298743891 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1298743913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1014798 + ... + 1016076.

It is an arithmetic number, because the mean of its divisors is an integer number (108800000).

Almost surely, 2^1298743923 is an apocalyptic number.

1298743923 is a deficient number, since it is larger than the sum of its proper divisors (442056077).

1298743923 is a wasteful number, since it uses less digits than its factorization.

1298743923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802.

The product of its digits is 653184, while the sum is 48.

The square root of 1298743923 is about 36038.0898911138. The cubic root of 1298743923 is about 1091.0412637652.

The spelling of 1298743923 in words is "one billion, two hundred ninety-eight million, seven hundred forty-three thousand, nine hundred twenty-three".