108151691 has 4 divisors (see below), whose sum is σ = 108210312. Its totient is φ = 108093072.

The previous prime is 108151669. The next prime is 108151697. The reversal of 108151691 is 196151801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 196151801 = 19 ⋅10323779.

It is a cyclic number.

It is not a de Polignac number, because 108151691 - 2⁶ = 108151627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108151697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26450 + ... + 30263.

It is an arithmetic number, because the mean of its divisors is an integer number (27052578).

Almost surely, 2^108151691 is an apocalyptic number.

108151691 is a deficient number, since it is larger than the sum of its proper divisors (58621).

108151691 is an equidigital number, since it uses as much as digits as its factorization.

108151691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58620.

The product of its (nonzero) digits is 2160, while the sum is 32.

The square root of 108151691 is about 10399.6005211739. The cubic root of 108151691 is about 476.4431691138.

The spelling of 108151691 in words is "one hundred eight million, one hundred fifty-one thousand, six hundred ninety-one".