1380156403 has 2 divisors, whose sum is σ = 1380156404. Its totient is φ = 1380156402.

The previous prime is 1380156359. The next prime is 1380156439. The reversal of 1380156403 is 3046510831.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1380156403 is a prime.

It is not a weakly prime, because it can be changed into another prime (1380156443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690078201 + 690078202.

It is an arithmetic number, because the mean of its divisors is an integer number (690078202).

Almost surely, 2^1380156403 is an apocalyptic number.

1380156403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380156403 is an equidigital number, since it uses as much as digits as its factorization.

1380156403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1380156403 is about 37150.4562959865. The cubic root of 1380156403 is about 1113.3783401095.

The spelling of 1380156403 in words is "one billion, three hundred eighty million, one hundred fifty-six thousand, four hundred three".