145541769 has 16 divisors (see below), whose sum is σ = 202891392. Its totient is φ = 92626688.

The previous prime is 145541761. The next prime is 145541771. The reversal of 145541769 is 967145541.

It is a cyclic number.

It is not a de Polignac number, because 145541769 - 2³ = 145541761 is a prime.

It is a super-2 number, since 2×145541769² = 42364813047298722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145541769.

It is not an unprimeable number, because it can be changed into a prime (145541761) 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, 39139 + ... + 42695.

It is an arithmetic number, because the mean of its divisors is an integer number (12680712).

Almost surely, 2^145541769 is an apocalyptic number.

It is an amenable number.

145541769 is a deficient number, since it is larger than the sum of its proper divisors (57349623).

145541769 is a wasteful number, since it uses less digits than its factorization.

145541769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4176.

The product of its digits is 151200, while the sum is 42.

The square root of 145541769 is about 12064.0693383286. The cubic root of 145541769 is about 526.0122800219.

The spelling of 145541769 in words is "one hundred forty-five million, five hundred forty-one thousand, seven hundred sixty-nine".