145001965 has 4 divisors (see below), whose sum is σ = 174002364. Its totient is φ = 116001568.

The previous prime is 145001957. The next prime is 145002007. The reversal of 145001965 is 569100541.

145001965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 98366724 + 46635241 = 9918^2 + 6829^2 .

It is a cyclic number.

It is not a de Polignac number, because 145001965 - 2³ = 145001957 is a prime.

It is a super-2 number, since 2×145001965² = 42051139707722450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14500192 + ... + 14500201.

It is an arithmetic number, because the mean of its divisors is an integer number (43500591).

Almost surely, 2^145001965 is an apocalyptic number.

It is an amenable number.

145001965 is a deficient number, since it is larger than the sum of its proper divisors (29000399).

145001965 is an equidigital number, since it uses as much as digits as its factorization.

145001965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29000398.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 145001965 is about 12041.6761706998. The cubic root of 145001965 is about 525.3611604110.

The spelling of 145001965 in words is "one hundred forty-five million, one thousand, nine hundred sixty-five".