145816369 has 4 divisors (see below), whose sum is σ = 145866240. Its totient is φ = 145766500.

The previous prime is 145816357. The next prime is 145816381. The reversal of 145816369 is 963618541.

145816369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 963618541 = 467 ⋅2063423.

It is an interprime number because it is at equal distance from previous prime (145816357) and next prime (145816381).

It is a cyclic number.

It is not a de Polignac number, because 145816369 - 2¹⁵ = 145783601 is a prime.

It is a super-2 number, since 2×145816369² = 42524826936688322, which contains 22 as substring.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145816339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20257 + ... + 26494.

It is an arithmetic number, because the mean of its divisors is an integer number (36466560).

Almost surely, 2^145816369 is an apocalyptic number.

It is an amenable number.

145816369 is a deficient number, since it is larger than the sum of its proper divisors (49871).

145816369 is an equidigital number, since it uses as much as digits as its factorization.

145816369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49870.

The product of its digits is 155520, while the sum is 43.

The square root of 145816369 is about 12075.4448779331. Note that the first 3 decimals coincide. The cubic root of 145816369 is about 526.3428889504.

The spelling of 145816369 in words is "one hundred forty-five million, eight hundred sixteen thousand, three hundred sixty-nine".