4125191687 has 2 divisors, whose sum is σ = 4125191688. Its totient is φ = 4125191686.

The previous prime is 4125191659. The next prime is 4125191699. The reversal of 4125191687 is 7861915214.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4125191687 - 2⁸ = 4125191431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4125191617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2062595843 + 2062595844.

It is an arithmetic number, because the mean of its divisors is an integer number (2062595844).

Almost surely, 2^4125191687 is an apocalyptic number.

4125191687 is a deficient number, since it is larger than the sum of its proper divisors (1).

4125191687 is an equidigital number, since it uses as much as digits as its factorization.

4125191687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 44.

The square root of 4125191687 is about 64227.6551572607. The cubic root of 4125191687 is about 1603.7920067397.

The spelling of 4125191687 in words is "four billion, one hundred twenty-five million, one hundred ninety-one thousand, six hundred eighty-seven".