3623021638 has 4 divisors (see below), whose sum is σ = 5434532460. Its totient is φ = 1811510818.

The previous prime is 3623021579. The next prime is 3623021641. The reversal of 3623021638 is 8361203263.

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

It is a congruent number.

It is an unprimeable number.

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, 905755408 + ... + 905755411.

It is an arithmetic number, because the mean of its divisors is an integer number (1358633115).

Almost surely, 2^3623021638 is an apocalyptic number.

3623021638 is a deficient number, since it is larger than the sum of its proper divisors (1811510822).

3623021638 is a wasteful number, since it uses less digits than its factorization.

3623021638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811510821.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 3623021638 is about 60191.5412495809. The cubic root of 3623021638 is about 1535.8789065936.

The spelling of 3623021638 in words is "three billion, six hundred twenty-three million, twenty-one thousand, six hundred thirty-eight".