2422147781 has 2 divisors, whose sum is σ = 2422147782. Its totient is φ = 2422147780.

The previous prime is 2422147729. The next prime is 2422147813. The reversal of 2422147781 is 1877412242.

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., 1612745281 + 809402500 = 40159^2 + 28450^2 .

It is a cyclic number.

It is not a de Polignac number, because 2422147781 - 2³⁰ = 1348405957 is a prime.

It is a super-2 number, since 2×2422147781² = 11733599746006447922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2422147381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1211073890 + 1211073891.

It is an arithmetic number, because the mean of its divisors is an integer number (1211073891).

Almost surely, 2^2422147781 is an apocalyptic number.

It is an amenable number.

2422147781 is a deficient number, since it is larger than the sum of its proper divisors (1).

2422147781 is an equidigital number, since it uses as much as digits as its factorization.

2422147781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50176, while the sum is 38.

The square root of 2422147781 is about 49215.3205922709. The cubic root of 2422147781 is about 1342.9717555515.

The spelling of 2422147781 in words is "two billion, four hundred twenty-two million, one hundred forty-seven thousand, seven hundred eighty-one".