1492543109 has 2 divisors, whose sum is σ = 1492543110. Its totient is φ = 1492543108.

The previous prime is 1492543103. The next prime is 1492543127. The reversal of 1492543109 is 9013452941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 798062500 + 694480609 = 28250^2 + 26353^2 .

It is an emirp because it is prime and its reverse (9013452941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1492543109 - 2²⁸ = 1224107653 is a prime.

It is a super-3 number, since 3×1492543109³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1492543103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 746271554 + 746271555.

It is an arithmetic number, because the mean of its divisors is an integer number (746271555).

Almost surely, 2^1492543109 is an apocalyptic number.

It is an amenable number.

1492543109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1492543109 is an equidigital number, since it uses as much as digits as its factorization.

1492543109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 1492543109 is about 38633.4454715082. The cubic root of 1492543109 is about 1142.8141995672.

The spelling of 1492543109 in words is "one billion, four hundred ninety-two million, five hundred forty-three thousand, one hundred nine".