1265923923 has 8 divisors (see below), whose sum is σ = 1841343936. Its totient is φ = 767226600.

The previous prime is 1265923903. The next prime is 1265923927. The reversal of 1265923923 is 3293295621.

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

It is not a de Polignac number, because 1265923923 - 2⁶ = 1265923859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1265923927) 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, 19180633 + ... + 19180698.

It is an arithmetic number, because the mean of its divisors is an integer number (230167992).

Almost surely, 2^1265923923 is an apocalyptic number.

1265923923 is a deficient number, since it is larger than the sum of its proper divisors (575420013).

1265923923 is a wasteful number, since it uses less digits than its factorization.

1265923923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38361345.

The product of its digits is 174960, while the sum is 42.

The square root of 1265923923 is about 35579.8246622998. The cubic root of 1265923923 is about 1081.7723308429.

The spelling of 1265923923 in words is "one billion, two hundred sixty-five million, nine hundred twenty-three thousand, nine hundred twenty-three".