4897621836 has 36 divisors (see below), whose sum is σ = 12529265112. Its totient is φ = 1612870464.

The previous prime is 4897621829. The next prime is 4897621837. The reversal of 4897621836 is 6381267984.

4897621836 is a `hidden beast` number, since 4 + 8 + 9 + 7 + 621 + 8 + 3 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×4897621836³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (4897621837) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 816561 + ... + 822536.

It is an arithmetic number, because the mean of its divisors is an integer number (348035142).

Almost surely, 2^4897621836 is an apocalyptic number.

It is an amenable number.

4897621836 is an abundant number, since it is smaller than the sum of its proper divisors (7631643276).

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

4897621836 is a wasteful number, since it uses less digits than its factorization.

4897621836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639190 (or 1639185 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 4897621836 is about 69983.0110526834. The cubic root of 4897621836 is about 1698.2244247975.

The spelling of 4897621836 in words is "four billion, eight hundred ninety-seven million, six hundred twenty-one thousand, eight hundred thirty-six".