145693793 has 4 divisors (see below), whose sum is σ = 166507200. Its totient is φ = 124880388.

The previous prime is 145693789. The next prime is 145693811. The reversal of 145693793 is 397396541.

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 145693793 - 2² = 145693789 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145693733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10406693 + ... + 10406706.

It is an arithmetic number, because the mean of its divisors is an integer number (41626800).

Almost surely, 2^145693793 is an apocalyptic number.

It is an amenable number.

145693793 is a deficient number, since it is larger than the sum of its proper divisors (20813407).

145693793 is an equidigital number, since it uses as much as digits as its factorization.

145693793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20813406.

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

The square root of 145693793 is about 12070.3683870874. The cubic root of 145693793 is about 526.1953630064.

The spelling of 145693793 in words is "one hundred forty-five million, six hundred ninety-three thousand, seven hundred ninety-three".