1381418069 has 2 divisors, whose sum is σ = 1381418070. Its totient is φ = 1381418068.

The previous prime is 1381418041. The next prime is 1381418119. The reversal of 1381418069 is 9608141831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 759663844 + 621754225 = 27562^2 + 24935^2 .

It is a cyclic number.

It is not a de Polignac number, because 1381418069 - 2²⁰ = 1380369493 is a prime.

It is a super-2 number, since 2×1381418069² = 3816631762719377522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1381418029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690709034 + 690709035.

It is an arithmetic number, because the mean of its divisors is an integer number (690709035).

Almost surely, 2^1381418069 is an apocalyptic number.

It is an amenable number.

1381418069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381418069 is an equidigital number, since it uses as much as digits as its factorization.

1381418069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 1381418069 is about 37167.4329083944. The cubic root of 1381418069 is about 1113.7175006504.

The spelling of 1381418069 in words is "one billion, three hundred eighty-one million, four hundred eighteen thousand, sixty-nine".