1545142373 has 2 divisors, whose sum is σ = 1545142374. Its totient is φ = 1545142372.

The previous prime is 1545142351. The next prime is 1545142397. The reversal of 1545142373 is 3732415451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1282929124 + 262213249 = 35818^2 + 16193^2 .

It is a cyclic number.

It is not a de Polignac number, because 1545142373 - 2²⁰ = 1544093797 is a prime.

It is a super-4 number, since 4×1545142373⁴ (a number of 38 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1545142303) 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 as a sum of consecutive naturals, namely, 772571186 + 772571187.

It is an arithmetic number, because the mean of its divisors is an integer number (772571187).

Almost surely, 2^1545142373 is an apocalyptic number.

It is an amenable number.

1545142373 is a deficient number, since it is larger than the sum of its proper divisors (1).

1545142373 is an equidigital number, since it uses as much as digits as its factorization.

1545142373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 35.

The square root of 1545142373 is about 39308.2990346822. The cubic root of 1545142373 is about 1156.0842932611.

The spelling of 1545142373 in words is "one billion, five hundred forty-five million, one hundred forty-two thousand, three hundred seventy-three".