1387274943 has 8 divisors (see below), whose sum is σ = 1913482800. Its totient is φ = 892958528.

The previous prime is 1387274927. The next prime is 1387274957. The reversal of 1387274943 is 3494727831.

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

It is a cyclic number.

It is not a de Polignac number, because 1387274943 - 2⁴ = 1387274927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1387274892 and 1387274901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387274963) 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, 7972758 + ... + 7972931.

It is an arithmetic number, because the mean of its divisors is an integer number (239185350).

Almost surely, 2^1387274943 is an apocalyptic number.

1387274943 is a deficient number, since it is larger than the sum of its proper divisors (526207857).

1387274943 is a wasteful number, since it uses less digits than its factorization.

1387274943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15945721.

The product of its digits is 1016064, while the sum is 48.

The square root of 1387274943 is about 37246.1399744994. The cubic root of 1387274943 is about 1115.2892445388.

The spelling of 1387274943 in words is "one billion, three hundred eighty-seven million, two hundred seventy-four thousand, nine hundred forty-three".