2153443698 has 192 divisors, whose sum is σ = 5922385920. Its totient is φ = 567780192.

The previous prime is 2153443687. The next prime is 2153443727. The reversal of 2153443698 is 8963443512.

2153443698 is a `hidden beast` number, since 21 + 534 + 4 + 3 + 6 + 98 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5867511 + ... + 5867877.

It is an arithmetic number, because the mean of its divisors is an integer number (30845760).

Almost surely, 2^2153443698 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2153443698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2961192960).

2153443698 is an abundant number, since it is smaller than the sum of its proper divisors (3768942222).

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

2153443698 is a wasteful number, since it uses less digits than its factorization.

2153443698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 441 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 2153443698 is about 46405.2119702087. The cubic root of 2153443698 is about 1291.3516066059.

The spelling of 2153443698 in words is "two billion, one hundred fifty-three million, four hundred forty-three thousand, six hundred ninety-eight".