1351999877 has 2 divisors, whose sum is σ = 1351999878. Its totient is φ = 1351999876.

The previous prime is 1351999849. The next prime is 1351999879. The reversal of 1351999877 is 7789991531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1351738756 + 261121 = 36766^2 + 511^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351999877 - 2³⁰ = 278258053 is a prime.

Together with 1351999879, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1351999879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675999938 + 675999939.

It is an arithmetic number, because the mean of its divisors is an integer number (675999939).

Almost surely, 2^1351999877 is an apocalyptic number.

It is an amenable number.

1351999877 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351999877 is an equidigital number, since it uses as much as digits as its factorization.

1351999877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4286520, while the sum is 59.

The square root of 1351999877 is about 36769.5509491209. The cubic root of 1351999877 is about 1105.7549292033.

The spelling of 1351999877 in words is "one billion, three hundred fifty-one million, nine hundred ninety-nine thousand, eight hundred seventy-seven".