1426899181 has 2 divisors, whose sum is σ = 1426899182. Its totient is φ = 1426899180.

The previous prime is 1426899169. The next prime is 1426899203. The reversal of 1426899181 is 1819986241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 833245956 + 593653225 = 28866^2 + 24365^2 .

It is an emirp because it is prime and its reverse (1819986241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1426899181 - 2¹⁹ = 1426374893 is a prime.

It is a super-2 number, since 2×1426899181² = 4072082545476941522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1426899121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713449590 + 713449591.

It is an arithmetic number, because the mean of its divisors is an integer number (713449591).

Almost surely, 2^1426899181 is an apocalyptic number.

It is an amenable number.

1426899181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1426899181 is an equidigital number, since it uses as much as digits as its factorization.

1426899181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 49.

The square root of 1426899181 is about 37774.3190673240. The cubic root of 1426899181 is about 1125.8082569624.

The spelling of 1426899181 in words is "one billion, four hundred twenty-six million, eight hundred ninety-nine thousand, one hundred eighty-one".