1513268123 has 2 divisors, whose sum is σ = 1513268124. Its totient is φ = 1513268122.

The previous prime is 1513268047. The next prime is 1513268177. The reversal of 1513268123 is 3218623151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1513268123 - 2⁸ = 1513267867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1513268123.

It is not a weakly prime, because it can be changed into another prime (1513268023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756634061 + 756634062.

It is an arithmetic number, because the mean of its divisors is an integer number (756634062).

Almost surely, 2^1513268123 is an apocalyptic number.

1513268123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1513268123 is an equidigital number, since it uses as much as digits as its factorization.

1513268123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The square root of 1513268123 is about 38900.7470750884. The cubic root of 1513268123 is about 1148.0794972507.

The spelling of 1513268123 in words is "one billion, five hundred thirteen million, two hundred sixty-eight thousand, one hundred twenty-three".