2693993906 has 4 divisors (see below), whose sum is σ = 4040990862. Its totient is φ = 1346996952.

The previous prime is 2693993881. The next prime is 2693993921. The reversal of 2693993906 is 6093993962.

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

It can be written as a sum of positive squares in only one way, i.e., 1571408881 + 1122585025 = 39641^2 + 33505^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 673498475 + ... + 673498478.

Almost surely, 2^2693993906 is an apocalyptic number.

2693993906 is a deficient number, since it is larger than the sum of its proper divisors (1346996956).

2693993906 is a wasteful number, since it uses less digits than its factorization.

2693993906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346996955.

The product of its (nonzero) digits is 4251528, while the sum is 56.

The square root of 2693993906 is about 51903.6983846045. The cubic root of 2693993906 is about 1391.4433717269.

Adding to 2693993906 its sum of digits (56), we get a palindrome (2693993962).

The spelling of 2693993906 in words is "two billion, six hundred ninety-three million, nine hundred ninety-three thousand, nine hundred six".