145869793 has 4 divisors (see below), whose sum is σ = 145894320. Its totient is φ = 145845268.

The previous prime is 145869781. The next prime is 145869827. The reversal of 145869793 is 397968541.

It is a happy number.

145869793 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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 145869793 - 2¹³ = 145861601 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145869793.

It is not an unprimeable number, because it can be changed into a prime (145869743) 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, 2946 + ... + 17332.

It is an arithmetic number, because the mean of its divisors is an integer number (36473580).

Almost surely, 2^145869793 is an apocalyptic number.

It is an amenable number.

145869793 is a deficient number, since it is larger than the sum of its proper divisors (24527).

145869793 is a wasteful number, since it uses less digits than its factorization.

145869793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24526.

The product of its digits is 1632960, while the sum is 52.

The square root of 145869793 is about 12077.6567677675. The cubic root of 145869793 is about 526.4071613621.

The spelling of 145869793 in words is "one hundred forty-five million, eight hundred sixty-nine thousand, seven hundred ninety-three".