1351783787 has 2 divisors, whose sum is σ = 1351783788. Its totient is φ = 1351783786.

The previous prime is 1351783777. The next prime is 1351783793. The reversal of 1351783787 is 7873871531.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1351783787 - 2⁶ = 1351783723 is a prime.

It is a super-3 number, since 3×1351783787³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (1351783777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675891893 + 675891894.

It is an arithmetic number, because the mean of its divisors is an integer number (675891894).

Almost surely, 2^1351783787 is an apocalyptic number.

1351783787 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351783787 is an equidigital number, since it uses as much as digits as its factorization.

1351783787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 987840, while the sum is 50.

The square root of 1351783787 is about 36766.6123949433. The cubic root of 1351783787 is about 1105.6960151659.

The spelling of 1351783787 in words is "one billion, three hundred fifty-one million, seven hundred eighty-three thousand, seven hundred eighty-seven".