145873822 has 4 divisors (see below), whose sum is σ = 218810736. Its totient is φ = 72936910.

The previous prime is 145873747. The next prime is 145873823. The reversal of 145873822 is 228378541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 228378541 = 37 ⋅6172393.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145873823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36468454 + ... + 36468457.

It is an arithmetic number, because the mean of its divisors is an integer number (54702684).

Almost surely, 2^145873822 is an apocalyptic number.

145873822 is a deficient number, since it is larger than the sum of its proper divisors (72936914).

145873822 is an equidigital number, since it uses as much as digits as its factorization.

145873822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72936913.

The product of its digits is 107520, while the sum is 40.

The square root of 145873822 is about 12077.8235622152. The cubic root of 145873822 is about 526.4120078646.

The spelling of 145873822 in words is "one hundred forty-five million, eight hundred seventy-three thousand, eight hundred twenty-two".