1890463129 has 2 divisors, whose sum is σ = 1890463130. Its totient is φ = 1890463128.

The previous prime is 1890463067. The next prime is 1890463181. The reversal of 1890463129 is 9213640981.

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., 1666272400 + 224190729 = 40820^2 + 14973^2 .

It is an emirp because it is prime and its reverse (9213640981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1890463129 - 2²⁹ = 1353592217 is a prime.

It is not a weakly prime, because it can be changed into another prime (1890163129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 945231564 + 945231565.

It is an arithmetic number, because the mean of its divisors is an integer number (945231565).

Almost surely, 2^1890463129 is an apocalyptic number.

It is an amenable number.

1890463129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1890463129 is an equidigital number, since it uses as much as digits as its factorization.

1890463129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 1890463129 is about 43479.4564018457. The cubic root of 1890463129 is about 1236.4865704113.

The spelling of 1890463129 in words is "one billion, eight hundred ninety million, four hundred sixty-three thousand, one hundred twenty-nine".