3889517894 has 4 divisors (see below), whose sum is σ = 5834276844. Its totient is φ = 1944758946.

The previous prime is 3889517887. The next prime is 3889517897. The reversal of 3889517894 is 4987159883.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3889517897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972379472 + ... + 972379475.

It is an arithmetic number, because the mean of its divisors is an integer number (1458569211).

Almost surely, 2^3889517894 is an apocalyptic number.

3889517894 is a deficient number, since it is larger than the sum of its proper divisors (1944758950).

3889517894 is a wasteful number, since it uses less digits than its factorization.

3889517894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944758949.

The product of its digits is 17418240, while the sum is 62.

The square root of 3889517894 is about 62365.9995029343. Note that the first 3 decimals coincide. The cubic root of 3889517894 is about 1572.6494399241.

Adding to 3889517894 its sum of digits (62), we get a square (3889517956 = 62366²).

The spelling of 3889517894 in words is "three billion, eight hundred eighty-nine million, five hundred seventeen thousand, eight hundred ninety-four".