145151986 has 16 divisors (see below), whose sum is σ = 249071040. Its totient is φ = 62148240.

The previous prime is 145151971. The next prime is 145151987. The reversal of 145151986 is 689151541.

It is not an unprimeable number, because it can be changed into a prime (145151987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12145 + ... + 20923.

It is an arithmetic number, because the mean of its divisors is an integer number (15566940).

Almost surely, 2^145151986 is an apocalyptic number.

145151986 is a deficient number, since it is larger than the sum of its proper divisors (103919054).

145151986 is a wasteful number, since it uses less digits than its factorization.

145151986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9969.

The product of its digits is 43200, while the sum is 40.

The square root of 145151986 is about 12047.9038010768. The cubic root of 145151986 is about 525.5422798903.

The spelling of 145151986 in words is "one hundred forty-five million, one hundred fifty-one thousand, nine hundred eighty-six".