3538743994 has 4 divisors (see below), whose sum is σ = 5308115994. Its totient is φ = 1769371996.

The previous prime is 3538743991. The next prime is 3538743997. The reversal of 3538743994 is 4993478353.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (3538743991) and next prime (3538743997).

It can be written as a sum of positive squares in only one way, i.e., 2473570225 + 1065173769 = 49735^2 + 32637^2 .

It is not an unprimeable number, because it can be changed into a prime (3538743991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 884685997 + ... + 884686000.

Almost surely, 2^3538743994 is an apocalyptic number.

3538743994 is a deficient number, since it is larger than the sum of its proper divisors (1769372000).

3538743994 is a wasteful number, since it uses less digits than its factorization.

3538743994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769371999.

The product of its digits is 9797760, while the sum is 55.

The square root of 3538743994 is about 59487.3431412095. The cubic root of 3538743994 is about 1523.8763011478.

The spelling of 3538743994 in words is "three billion, five hundred thirty-eight million, seven hundred forty-three thousand, nine hundred ninety-four".