1513367381 has 2 divisors, whose sum is σ = 1513367382. Its totient is φ = 1513367380.

The previous prime is 1513367357. The next prime is 1513367389. The reversal of 1513367381 is 1837633151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1324304881 + 189062500 = 36391^2 + 13750^2 .

It is an emirp because it is prime and its reverse (1837633151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1513367381 - 2¹⁰ = 1513366357 is a prime.

It is a super-2 number, since 2×1513367381² = 4580561659749598322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1513367389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756683690 + 756683691.

It is an arithmetic number, because the mean of its divisors is an integer number (756683691).

Almost surely, 2^1513367381 is an apocalyptic number.

It is an amenable number.

1513367381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1513367381 is an equidigital number, since it uses as much as digits as its factorization.

1513367381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 38.

The square root of 1513367381 is about 38902.0228394360. The cubic root of 1513367381 is about 1148.1045982405.

The spelling of 1513367381 in words is "one billion, five hundred thirteen million, three hundred sixty-seven thousand, three hundred eighty-one".