1498018381 has 2 divisors, whose sum is σ = 1498018382. Its totient is φ = 1498018380.

The previous prime is 1498018339. The next prime is 1498018399. The reversal of 1498018381 is 1838108941.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1300756356 + 197262025 = 36066^2 + 14045^2 .

It is an emirp because it is prime and its reverse (1838108941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1498018381 - 2⁷ = 1498018253 is a prime.

It is a super-2 number, since 2×1498018381² = 4488118139627722322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1498018321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 749009190 + 749009191.

It is an arithmetic number, because the mean of its divisors is an integer number (749009191).

Almost surely, 2^1498018381 is an apocalyptic number.

It is an amenable number.

1498018381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1498018381 is an equidigital number, since it uses as much as digits as its factorization.

1498018381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 43.

The square root of 1498018381 is about 38704.2424160453. The cubic root of 1498018381 is about 1144.2099343016.

The spelling of 1498018381 in words is "one billion, four hundred ninety-eight million, eighteen thousand, three hundred eighty-one".