145696918 has 4 divisors (see below), whose sum is σ = 218545380. Its totient is φ = 72848458.

The previous prime is 145696909. The next prime is 145696933. The reversal of 145696918 is 819696541.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 36424228 + ... + 36424231.

It is an arithmetic number, because the mean of its divisors is an integer number (54636345).

Almost surely, 2^145696918 is an apocalyptic number.

145696918 is a deficient number, since it is larger than the sum of its proper divisors (72848462).

145696918 is an equidigital number, since it uses as much as digits as its factorization.

145696918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72848461.

The product of its digits is 466560, while the sum is 49.

The square root of 145696918 is about 12070.4978356321. The cubic root of 145696918 is about 526.1991251176.

The spelling of 145696918 in words is "one hundred forty-five million, six hundred ninety-six thousand, nine hundred eighteen".