145312849 has 8 divisors (see below), whose sum is σ = 158626080. Its totient is φ = 132016800.

The previous prime is 145312819. The next prime is 145312877. The reversal of 145312849 is 948213541.

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 145312849 - 2⁷ = 145312721 is a prime.

It is a super-2 number, since 2×145312849² = 42231648168993602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145312819) 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 7 ways as a sum of consecutive naturals, for example, 18837 + ... + 25405.

It is an arithmetic number, because the mean of its divisors is an integer number (19828260).

Almost surely, 2^145312849 is an apocalyptic number.

It is an amenable number.

145312849 is a deficient number, since it is larger than the sum of its proper divisors (13313231).

145312849 is a wasteful number, since it uses less digits than its factorization.

145312849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8591.

The product of its digits is 34560, while the sum is 37.

The square root of 145312849 is about 12054.5779270782. The cubic root of 145312849 is about 525.7363502553.

The spelling of 145312849 in words is "one hundred forty-five million, three hundred twelve thousand, eight hundred forty-nine".