1538965023 has 16 divisors (see below), whose sum is σ = 2119213056. Its totient is φ = 992380320.

The previous prime is 1538965007. The next prime is 1538965031. The reversal of 1538965023 is 3205698351.

It is not a de Polignac number, because 1538965023 - 2⁴ = 1538965007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1538965033) 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, 299986 + ... + 305072.

It is an arithmetic number, because the mean of its divisors is an integer number (132450816).

Almost surely, 2^1538965023 is an apocalyptic number.

1538965023 is a deficient number, since it is larger than the sum of its proper divisors (580248033).

1538965023 is a wasteful number, since it uses less digits than its factorization.

1538965023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8374.

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 1538965023 is about 39229.6446963263. The cubic root of 1538965023 is about 1154.5415927915.

The spelling of 1538965023 in words is "one billion, five hundred thirty-eight million, nine hundred sixty-five thousand, twenty-three".