1831085413 has 2 divisors, whose sum is σ = 1831085414. Its totient is φ = 1831085412.

The previous prime is 1831085323. The next prime is 1831085437. The reversal of 1831085413 is 3145801381.

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., 1114024129 + 717061284 = 33377^2 + 26778^2 .

It is a cyclic number.

It is not a de Polignac number, because 1831085413 - 2¹³ = 1831077221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1831085213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 915542706 + 915542707.

It is an arithmetic number, because the mean of its divisors is an integer number (915542707).

Almost surely, 2^1831085413 is an apocalyptic number.

It is an amenable number.

1831085413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1831085413 is an equidigital number, since it uses as much as digits as its factorization.

1831085413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 1831085413 is about 42791.1838233064. The cubic root of 1831085413 is about 1223.4029807790.

Adding to 1831085413 its reverse (3145801381), we get a palindrome (4976886794).

The spelling of 1831085413 in words is "one billion, eight hundred thirty-one million, eighty-five thousand, four hundred thirteen".