1398378703 has 8 divisors (see below), whose sum is σ = 1437836400. Its totient is φ = 1359008640.

The previous prime is 1398378643. The next prime is 1398378713. The reversal of 1398378703 is 3078738931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1398378703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398378713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11148 + ... + 54046.

It is an arithmetic number, because the mean of its divisors is an integer number (179729550).

Almost surely, 2^1398378703 is an apocalyptic number.

1398378703 is a deficient number, since it is larger than the sum of its proper divisors (39457697).

1398378703 is an equidigital number, since it uses as much as digits as its factorization.

1398378703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43817.

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 1398378703 is about 37394.9020990830. The cubic root of 1398378703 is about 1118.2569355059.

The spelling of 1398378703 in words is "one billion, three hundred ninety-eight million, three hundred seventy-eight thousand, seven hundred three".