145632909 has 8 divisors (see below), whose sum is σ = 194295712. Its totient is φ = 97029360.

The previous prime is 145632901. The next prime is 145632919. The reversal of 145632909 is 909236541.

145632909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145632909 - 2³ = 145632901 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145632901) 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, 8719 + ... + 19164.

It is an arithmetic number, because the mean of its divisors is an integer number (24286964).

Almost surely, 2^145632909 is an apocalyptic number.

It is an amenable number.

145632909 is a deficient number, since it is larger than the sum of its proper divisors (48662803).

145632909 is a wasteful number, since it uses less digits than its factorization.

145632909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29627.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 145632909 is about 12067.8460795620. The cubic root of 145632909 is about 526.1220555088.

The spelling of 145632909 in words is "one hundred forty-five million, six hundred thirty-two thousand, nine hundred nine".