3894492500 has 30 divisors (see below), whose sum is σ = 8516481666. Its totient is φ = 1557796000.

The previous prime is 3894492493. The next prime is 3894492517. The reversal of 3894492500 is 52944983.

It can be written as a sum of positive squares in 5 ways, for example, as 735602884 + 3158889616 = 27122^2 + 56204^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 776399 + ... + 781398.

Almost surely, 2^3894492500 is an apocalyptic number.

It is an amenable number.

3894492500 is an abundant number, since it is smaller than the sum of its proper divisors (4621989166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3894492500 is a wasteful number, since it uses less digits than its factorization.

3894492500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557821 (or 1557804 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 3894492500 is about 62405.8691150119. The cubic root of 3894492500 is about 1573.3196153924.

The spelling of 3894492500 in words is "three billion, eight hundred ninety-four million, four hundred ninety-two thousand, five hundred".