1523113187 has 2 divisors, whose sum is σ = 1523113188. Its totient is φ = 1523113186.

The previous prime is 1523113171. The next prime is 1523113201. The reversal of 1523113187 is 7813113251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1523113187 - 2⁴ = 1523113171 is a prime.

It is not a weakly prime, because it can be changed into another prime (1523113157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 761556593 + 761556594.

It is an arithmetic number, because the mean of its divisors is an integer number (761556594).

Almost surely, 2^1523113187 is an apocalyptic number.

1523113187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1523113187 is an equidigital number, since it uses as much as digits as its factorization.

1523113187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 32.

The square root of 1523113187 is about 39027.0827375042. The cubic root of 1523113187 is about 1150.5638538017.

The spelling of 1523113187 in words is "one billion, five hundred twenty-three million, one hundred thirteen thousand, one hundred eighty-seven".