145832019 has 4 divisors (see below), whose sum is σ = 194442696. Its totient is φ = 97221344.

The previous prime is 145832003. The next prime is 145832033. The reversal of 145832019 is 910238541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145832019 - 2⁴ = 145832003 is a prime.

It is a super-2 number, since 2×145832019² = 42533955531232722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145842019) 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, 24305334 + ... + 24305339.

It is an arithmetic number, because the mean of its divisors is an integer number (48610674).

Almost surely, 2^145832019 is an apocalyptic number.

145832019 is a deficient number, since it is larger than the sum of its proper divisors (48610677).

145832019 is an equidigital number, since it uses as much as digits as its factorization.

145832019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48610676.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 145832019 is about 12076.0928697986. The cubic root of 145832019 is about 526.3617185043.

The spelling of 145832019 in words is "one hundred forty-five million, eight hundred thirty-two thousand, nineteen".