145149189 has 16 divisors (see below), whose sum is σ = 205332480. Its totient is φ = 90946800.

The previous prime is 145149181. The next prime is 145149197. The reversal of 145149189 is 981941541.

It is an interprime number because it is at equal distance from previous prime (145149181) and next prime (145149197).

It is not a de Polignac number, because 145149189 - 2³ = 145149181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145149189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145149181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2787 + ... + 17264.

It is an arithmetic number, because the mean of its divisors is an integer number (12833280).

Almost surely, 2^145149189 is an apocalyptic number.

145149189 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

145149189 is a deficient number, since it is larger than the sum of its proper divisors (60183291).

145149189 is a wasteful number, since it uses less digits than its factorization.

145149189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20200.

The product of its digits is 51840, while the sum is 42.

The square root of 145149189 is about 12047.7877222335. The cubic root of 145149189 is about 525.5389042304.

The spelling of 145149189 in words is "one hundred forty-five million, one hundred forty-nine thousand, one hundred eighty-nine".