2135254469 has 2 divisors, whose sum is σ = 2135254470. Its totient is φ = 2135254468.

The previous prime is 2135254421. The next prime is 2135254489. The reversal of 2135254469 is 9644525312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2078448100 + 56806369 = 45590^2 + 7537^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2135254469 is a prime.

It is a super-2 number, since 2×2135254469² = 9118623294768943922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2135254489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067627234 + 1067627235.

It is an arithmetic number, because the mean of its divisors is an integer number (1067627235).

Almost surely, 2^2135254469 is an apocalyptic number.

It is an amenable number.

2135254469 is a deficient number, since it is larger than the sum of its proper divisors (1).

2135254469 is an equidigital number, since it uses as much as digits as its factorization.

2135254469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 41.

The square root of 2135254469 is about 46208.8137588491. The cubic root of 2135254469 is about 1287.7054877223.

The spelling of 2135254469 in words is "two billion, one hundred thirty-five million, two hundred fifty-four thousand, four hundred sixty-nine".