1383994937 has 4 divisors (see below), whose sum is σ = 1490456100. Its totient is φ = 1277533776.

The previous prime is 1383994921. The next prime is 1383994949. The reversal of 1383994937 is 7394993831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7394993831 = 503 ⋅14701777.

It can be written as a sum of positive squares in 2 ways, for example, as 957531136 + 426463801 = 30944^2 + 20651^2 .

It is a cyclic number.

It is not a de Polignac number, because 1383994937 - 2⁴ = 1383994921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1383994967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53230562 + ... + 53230587.

It is an arithmetic number, because the mean of its divisors is an integer number (372614025).

Almost surely, 2^1383994937 is an apocalyptic number.

It is an amenable number.

1383994937 is a deficient number, since it is larger than the sum of its proper divisors (106461163).

1383994937 is a wasteful number, since it uses less digits than its factorization.

1383994937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106461162.

The product of its digits is 4408992, while the sum is 56.

The square root of 1383994937 is about 37202.0824282727. The cubic root of 1383994937 is about 1114.4095721804.

The spelling of 1383994937 in words is "one billion, three hundred eighty-three million, nine hundred ninety-four thousand, nine hundred thirty-seven".