145691159 has 4 divisors (see below), whose sum is σ = 145715304. Its totient is φ = 145667016.

The previous prime is 145691149. The next prime is 145691191. The reversal of 145691159 is 951196541.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 145691159 - 2⁸ = 145690903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145691149) 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, 5729 + ... + 18005.

It is an arithmetic number, because the mean of its divisors is an integer number (36428826).

Almost surely, 2^145691159 is an apocalyptic number.

145691159 is a deficient number, since it is larger than the sum of its proper divisors (24145).

145691159 is a wasteful number, since it uses less digits than its factorization.

145691159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24144.

The product of its digits is 48600, while the sum is 41.

The square root of 145691159 is about 12070.2592764199. The cubic root of 145691159 is about 526.1921919563.

The spelling of 145691159 in words is "one hundred forty-five million, six hundred ninety-one thousand, one hundred fifty-nine".