1380938029 has 2 divisors, whose sum is σ = 1380938030. Its totient is φ = 1380938028.

The previous prime is 1380938023. The next prime is 1380938057. The reversal of 1380938029 is 9208390831.

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., 1301549929 + 79388100 = 36077^2 + 8910^2 .

It is a cyclic number.

It is not a de Polignac number, because 1380938029 - 2⁹ = 1380937517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1380938023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690469014 + 690469015.

It is an arithmetic number, because the mean of its divisors is an integer number (690469015).

Almost surely, 2^1380938029 is an apocalyptic number.

It is an amenable number.

1380938029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380938029 is an equidigital number, since it uses as much as digits as its factorization.

1380938029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 1380938029 is about 37160.9745431952. The cubic root of 1380938029 is about 1113.5884808408.

The spelling of 1380938029 in words is "one billion, three hundred eighty million, nine hundred thirty-eight thousand, twenty-nine".