38643802 has 4 divisors (see below), whose sum is σ = 57965706. Its totient is φ = 19321900.

The previous prime is 38643793. The next prime is 38643827. The reversal of 38643802 is 20834683.

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., 38180041 + 463761 = 6179^2 + 681^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9660949 + ... + 9660952.

Almost surely, 2^38643802 is an apocalyptic number.

38643802 is a deficient number, since it is larger than the sum of its proper divisors (19321904).

38643802 is a wasteful number, since it uses less digits than its factorization.

38643802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19321903.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 38643802 is about 6216.4139180077. The cubic root of 38643802 is about 338.0855554111.

The spelling of 38643802 in words is "thirty-eight million, six hundred forty-three thousand, eight hundred two".