145369793 has 4 divisors (see below), whose sum is σ = 145440768. Its totient is φ = 145298820.

The previous prime is 145369789. The next prime is 145369811. The reversal of 145369793 is 397963541.

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.

It is a cyclic number.

It is not a de Polignac number, because 145369793 - 2² = 145369789 is a prime.

It is a super-2 number, since 2×145369793² = 42264753433725698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145369733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32321 + ... + 36542.

It is an arithmetic number, because the mean of its divisors is an integer number (36360192).

Almost surely, 2^145369793 is an apocalyptic number.

It is an amenable number.

145369793 is a deficient number, since it is larger than the sum of its proper divisors (70975).

145369793 is an equidigital number, since it uses as much as digits as its factorization.

145369793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70974.

The product of its digits is 612360, while the sum is 47.

The square root of 145369793 is about 12056.9396199865. The cubic root of 145369793 is about 525.8050150275.

The spelling of 145369793 in words is "one hundred forty-five million, three hundred sixty-nine thousand, seven hundred ninety-three".