145111645 has 16 divisors (see below), whose sum is σ = 209485440. Its totient is φ = 94267584.

The previous prime is 145111573. The next prime is 145111657. The reversal of 145111645 is 546111541.

145111645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 145111645 - 2²⁷ = 10893917 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108442 + ... + 109771.

It is an arithmetic number, because the mean of its divisors is an integer number (13092840).

Almost surely, 2^145111645 is an apocalyptic number.

It is an amenable number.

145111645 is a deficient number, since it is larger than the sum of its proper divisors (64373795).

145111645 is a wasteful number, since it uses less digits than its factorization.

145111645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218244.

The product of its digits is 2400, while the sum is 28.

The square root of 145111645 is about 12046.2294930821. The cubic root of 145111645 is about 525.4935887078.

It can be divided in two parts, 14511 and 1645, that multiplied together give a triangular number (23870595 = T₆₉₀₉).

The spelling of 145111645 in words is "one hundred forty-five million, one hundred eleven thousand, six hundred forty-five".