1532397145 has 4 divisors (see below), whose sum is σ = 1838876580. Its totient is φ = 1225917712.

The previous prime is 1532397131. The next prime is 1532397193. The reversal of 1532397145 is 5417932351.

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 579316761 + 953080384 = 24069^2 + 30872^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1532397145 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1532397098 and 1532397107.

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, 153239710 + ... + 153239719.

It is an arithmetic number, because the mean of its divisors is an integer number (459719145).

Almost surely, 2^1532397145 is an apocalyptic number.

It is an amenable number.

1532397145 is a deficient number, since it is larger than the sum of its proper divisors (306479435).

1532397145 is an equidigital number, since it uses as much as digits as its factorization.

1532397145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306479434.

The product of its digits is 113400, while the sum is 40.

The square root of 1532397145 is about 39145.8445431951. The cubic root of 1532397145 is about 1152.8968291380.

The spelling of 1532397145 in words is "one billion, five hundred thirty-two million, three hundred ninety-seven thousand, one hundred forty-five".