1534229381 has 2 divisors, whose sum is σ = 1534229382. Its totient is φ = 1534229380.

The previous prime is 1534229357. The next prime is 1534229387. The reversal of 1534229381 is 1839224351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1518349156 + 15880225 = 38966^2 + 3985^2 .

It is a cyclic number.

It is not a de Polignac number, because 1534229381 - 2⁶ = 1534229317 is a prime.

It is a super-2 number, since 2×1534229381² = 4707719587047286322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1534229387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767114690 + 767114691.

It is an arithmetic number, because the mean of its divisors is an integer number (767114691).

Almost surely, 2^1534229381 is an apocalyptic number.

It is an amenable number.

1534229381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1534229381 is an equidigital number, since it uses as much as digits as its factorization.

1534229381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 38.

The square root of 1534229381 is about 39169.2402402702. The cubic root of 1534229381 is about 1153.3561395155.

The spelling of 1534229381 in words is "one billion, five hundred thirty-four million, two hundred twenty-nine thousand, three hundred eighty-one".