1378133343 has 18 divisors (see below), whose sum is σ = 2080956696. Its totient is φ = 878806632.

The previous prime is 1378133293. The next prime is 1378133371. The reversal of 1378133343 is 3433318731.

It is a happy number.

It is not a de Polignac number, because 1378133343 - 2¹⁴ = 1378116959 is a prime.

It is a super-2 number, since 2×1378133343² = 3798503022176711298, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1378133298 and 1378133307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378133443) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 139971 + ... + 149492.

Almost surely, 2^1378133343 is an apocalyptic number.

1378133343 is a deficient number, since it is larger than the sum of its proper divisors (702823353).

1378133343 is a wasteful number, since it uses less digits than its factorization.

1378133343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289515 (or 289489 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 1378133343 is about 37123.2183814927. The cubic root of 1378133343 is about 1112.8340702404.

The spelling of 1378133343 in words is "one billion, three hundred seventy-eight million, one hundred thirty-three thousand, three hundred forty-three".