1354768861 has 2 divisors, whose sum is σ = 1354768862. Its totient is φ = 1354768860.

The previous prime is 1354768859. The next prime is 1354768889. The reversal of 1354768861 is 1688674531.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1113556900 + 241211961 = 33370^2 + 15531^2 .

It is a cyclic number.

It is not a de Polignac number, because 1354768861 - 2¹ = 1354768859 is a prime.

Together with 1354768859, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1354768361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677384430 + 677384431.

It is an arithmetic number, because the mean of its divisors is an integer number (677384431).

Almost surely, 2^1354768861 is an apocalyptic number.

It is an amenable number.

1354768861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1354768861 is an equidigital number, since it uses as much as digits as its factorization.

1354768861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 49.

The square root of 1354768861 is about 36807.1849100145. The cubic root of 1354768861 is about 1106.5093005279.

The spelling of 1354768861 in words is "one billion, three hundred fifty-four million, seven hundred sixty-eight thousand, eight hundred sixty-one".