145187912 has 8 divisors (see below), whose sum is σ = 272227350. Its totient is φ = 72593952.

The previous prime is 145187897. The next prime is 145187947. The reversal of 145187912 is 219781541.

It can be written as a sum of positive squares in only one way, i.e., 145106116 + 81796 = 12046^2 + 286^2 .

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

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, 9074237 + ... + 9074252.

Almost surely, 2^145187912 is an apocalyptic number.

It is an amenable number.

145187912 is a deficient number, since it is larger than the sum of its proper divisors (127039438).

145187912 is a wasteful number, since it uses less digits than its factorization.

145187912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18148495 (or 18148491 counting only the distinct ones).

The product of its digits is 20160, while the sum is 38.

The square root of 145187912 is about 12049.3946735925. The cubic root of 145187912 is about 525.5856346179.

The spelling of 145187912 in words is "one hundred forty-five million, one hundred eighty-seven thousand, nine hundred twelve".