2152147998 has 128 divisors (see below), whose sum is σ = 5889106944. Its totient is φ = 506188800.

The previous prime is 2152147951. The next prime is 2152148003. The reversal of 2152147998 is 8997412512.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 314938 + ... + 321698.

It is an arithmetic number, because the mean of its divisors is an integer number (46008648).

Almost surely, 2^2152147998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2152147998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2944553472).

2152147998 is an abundant number, since it is smaller than the sum of its proper divisors (3736958946).

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

2152147998 is a wasteful number, since it uses less digits than its factorization.

2152147998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6850.

The product of its digits is 362880, while the sum is 48.

The square root of 2152147998 is about 46391.2491532617. The cubic root of 2152147998 is about 1291.0925579679.

The spelling of 2152147998 in words is "two billion, one hundred fifty-two million, one hundred forty-seven thousand, nine hundred ninety-eight".