1520385023 has 2 divisors, whose sum is σ = 1520385024. Its totient is φ = 1520385022.

The previous prime is 1520385007. The next prime is 1520385043. The reversal of 1520385023 is 3205830251.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1520385023 - 2⁴ = 1520385007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1520385043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760192511 + 760192512.

It is an arithmetic number, because the mean of its divisors is an integer number (760192512).

Almost surely, 2^1520385023 is an apocalyptic number.

1520385023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520385023 is an equidigital number, since it uses as much as digits as its factorization.

1520385023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1520385023 is about 38992.1148823708. The cubic root of 1520385023 is about 1149.8764890667.

The spelling of 1520385023 in words is "one billion, five hundred twenty million, three hundred eighty-five thousand, twenty-three".