1378497343 has 6 divisors (see below), whose sum is σ = 1464355616. Its totient is φ = 1297408992.

The previous prime is 1378497319. The next prime is 1378497347. The reversal of 1378497343 is 3437948731.

It is not a de Polignac number, because 1378497343 - 2²⁹ = 841626431 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 (1378497347) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2384655 + ... + 2385232.

Almost surely, 2^1378497343 is an apocalyptic number.

1378497343 is a deficient number, since it is larger than the sum of its proper divisors (85858273).

1378497343 is an equidigital number, since it uses as much as digits as its factorization.

1378497343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4769921 (or 4769904 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 49.

The square root of 1378497343 is about 37128.1206499871. The cubic root of 1378497343 is about 1112.9320375248.

The spelling of 1378497343 in words is "one billion, three hundred seventy-eight million, four hundred ninety-seven thousand, three hundred forty-three".