2269342781 has 2 divisors, whose sum is σ = 2269342782. Its totient is φ = 2269342780.

The previous prime is 2269342739. The next prime is 2269342787. The reversal of 2269342781 is 1872439622.

2269342781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1919316100 + 350026681 = 43810^2 + 18709^2 .

It is a cyclic number.

It is not a de Polignac number, because 2269342781 - 2²² = 2265148477 is a prime.

It is a super-2 number, since 2×2269342781² = 10299833315353627922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2269342787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1134671390 + 1134671391.

It is an arithmetic number, because the mean of its divisors is an integer number (1134671391).

Almost surely, 2^2269342781 is an apocalyptic number.

It is an amenable number.

2269342781 is a deficient number, since it is larger than the sum of its proper divisors (1).

2269342781 is an equidigital number, since it uses as much as digits as its factorization.

2269342781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 44.

The square root of 2269342781 is about 47637.6193884623. The cubic root of 2269342781 is about 1314.1149824822.

The spelling of 2269342781 in words is "two billion, two hundred sixty-nine million, three hundred forty-two thousand, seven hundred eighty-one".