145885816 has 8 divisors (see below), whose sum is σ = 273535920. Its totient is φ = 72942904.

The previous prime is 145885807. The next prime is 145885829. The reversal of 145885816 is 618588541.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9117856 + ... + 9117871.

It is an arithmetic number, because the mean of its divisors is an integer number (34191990).

Almost surely, 2^145885816 is an apocalyptic number.

It is an amenable number.

145885816 is a deficient number, since it is larger than the sum of its proper divisors (127650104).

145885816 is a wasteful number, since it uses less digits than its factorization.

145885816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18235733 (or 18235729 counting only the distinct ones).

The product of its digits is 307200, while the sum is 46.

The square root of 145885816 is about 12078.3200818657. The cubic root of 145885816 is about 526.4264349735.

The spelling of 145885816 in words is "one hundred forty-five million, eight hundred eighty-five thousand, eight hundred sixteen".