2153499808 has 12 divisors (see below), whose sum is σ = 4239702810. Its totient is φ = 1076749888.

The previous prime is 2153499797. The next prime is 2153499833. The reversal of 2153499808 is 8089943512.

It can be written as a sum of positive squares in only one way, i.e., 2102405904 + 51093904 = 45852^2 + 7148^2 .

It is a super-2 number, since 2×2153499808² = 9275122846112073728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33648403 + ... + 33648466.

Almost surely, 2^2153499808 is an apocalyptic number.

It is an amenable number.

2153499808 is a deficient number, since it is larger than the sum of its proper divisors (2086203002).

2153499808 is an equidigital number, since it uses as much as digits as its factorization.

2153499808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67296879 (or 67296871 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 2153499808 is about 46405.8165319823. The cubic root of 2153499808 is about 1291.3628223018.

The spelling of 2153499808 in words is "two billion, one hundred fifty-three million, four hundred ninety-nine thousand, eight hundred eight".