145146538 has 8 divisors (see below), whose sum is σ = 217798020. Its totient is φ = 72547200.

The previous prime is 145146517. The next prime is 145146553. The reversal of 145146538 is 835641541.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 111239209 + 33907329 = 10547^2 + 5823^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 145146497 and 145146506.

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, 5113 + ... + 17788.

Almost surely, 2^145146538 is an apocalyptic number.

145146538 is a deficient number, since it is larger than the sum of its proper divisors (72651482).

145146538 is a wasteful number, since it uses less digits than its factorization.

145146538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26072.

The product of its digits is 57600, while the sum is 37.

The square root of 145146538 is about 12047.6777015324. The cubic root of 145146538 is about 525.5357047358.

The spelling of 145146538 in words is "one hundred forty-five million, one hundred forty-six thousand, five hundred thirty-eight".