145652993 has 8 divisors (see below), whose sum is σ = 158606400. Its totient is φ = 133228368.

The previous prime is 145652989. The next prime is 145652999. The reversal of 145652993 is 399256541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145652993 - 2² = 145652989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145652999) 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 7 ways as a sum of consecutive naturals, for example, 131621 + ... + 132722.

It is an arithmetic number, because the mean of its divisors is an integer number (19825800).

Almost surely, 2^145652993 is an apocalyptic number.

It is an amenable number.

145652993 is a deficient number, since it is larger than the sum of its proper divisors (12953407).

145652993 is a wasteful number, since it uses less digits than its factorization.

145652993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264391.

The product of its digits is 291600, while the sum is 44.

The square root of 145652993 is about 12068.6781794859. The cubic root of 145652993 is about 526.1462399456.

The spelling of 145652993 in words is "one hundred forty-five million, six hundred fifty-two thousand, nine hundred ninety-three".