1498728281 has 2 divisors, whose sum is σ = 1498728282. Its totient is φ = 1498728280.

The previous prime is 1498728247. The next prime is 1498728289. The reversal of 1498728281 is 1828278941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1043290000 + 455438281 = 32300^2 + 21341^2 .

It is a cyclic number.

It is not a de Polignac number, because 1498728281 - 2¹⁰ = 1498727257 is a prime.

It is a super-2 number, since 2×1498728281² = 4492372920538429922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1498728289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 749364140 + 749364141.

It is an arithmetic number, because the mean of its divisors is an integer number (749364141).

Almost surely, 2^1498728281 is an apocalyptic number.

It is an amenable number.

1498728281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1498728281 is an equidigital number, since it uses as much as digits as its factorization.

1498728281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 50.

The square root of 1498728281 is about 38713.4121590955. The cubic root of 1498728281 is about 1144.3906500093.

The spelling of 1498728281 in words is "one billion, four hundred ninety-eight million, seven hundred twenty-eight thousand, two hundred eighty-one".