1545532139 has 2 divisors, whose sum is σ = 1545532140. Its totient is φ = 1545532138.

The previous prime is 1545532117. The next prime is 1545532147. The reversal of 1545532139 is 9312355451.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1545532139 - 2¹² = 1545528043 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1545532159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 772766069 + 772766070.

It is an arithmetic number, because the mean of its divisors is an integer number (772766070).

Almost surely, 2^1545532139 is an apocalyptic number.

1545532139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1545532139 is an equidigital number, since it uses as much as digits as its factorization.

1545532139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81000, while the sum is 38.

The square root of 1545532139 is about 39313.2565300816. The cubic root of 1545532139 is about 1156.1814934663.

The spelling of 1545532139 in words is "one billion, five hundred forty-five million, five hundred thirty-two thousand, one hundred thirty-nine".