1397815403 has 2 divisors, whose sum is σ = 1397815404. Its totient is φ = 1397815402.

The previous prime is 1397815373. The next prime is 1397815459. The reversal of 1397815403 is 3045187931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1397815403 - 2¹⁸ = 1397553259 is a prime.

It is not a weakly prime, because it can be changed into another prime (1397815483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698907701 + 698907702.

It is an arithmetic number, because the mean of its divisors is an integer number (698907702).

Almost surely, 2^1397815403 is an apocalyptic number.

1397815403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1397815403 is an equidigital number, since it uses as much as digits as its factorization.

1397815403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 1397815403 is about 37387.3695651352. The cubic root of 1397815403 is about 1118.1067618963.

The spelling of 1397815403 in words is "one billion, three hundred ninety-seven million, eight hundred fifteen thousand, four hundred three".