145385816 has 16 divisors (see below), whose sum is σ = 281998800. Its totient is φ = 70186144.

The previous prime is 145385813. The next prime is 145385827. The reversal of 145385816 is 618583541.

It is a super-2 number, since 2×145385816² = 42274070987971712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145385813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313100 + ... + 313563.

It is an arithmetic number, because the mean of its divisors is an integer number (17624925).

Almost surely, 2^145385816 is an apocalyptic number.

It is an amenable number.

145385816 is a deficient number, since it is larger than the sum of its proper divisors (136612984).

145385816 is a wasteful number, since it uses less digits than its factorization.

145385816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626698 (or 626694 counting only the distinct ones).

The product of its digits is 115200, while the sum is 41.

The square root of 145385816 is about 12057.6040737785. The cubic root of 145385816 is about 525.8243328056.

The spelling of 145385816 in words is "one hundred forty-five million, three hundred eighty-five thousand, eight hundred sixteen".