2146397616 has 140 divisors (see below), whose sum is σ = 6802351080. Its totient is φ = 650384640.

The previous prime is 2146397609. The next prime is 2146397621. The reversal of 2146397616 is 6167936412.

2146397616 is a `hidden beast` number, since 2 + 1 + 4 + 639 + 7 + 6 + 1 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 119940 + ... + 136668.

It is an arithmetic number, because the mean of its divisors is an integer number (48588222).

Almost surely, 2^2146397616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2146397616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3401175540).

2146397616 is an abundant number, since it is smaller than the sum of its proper divisors (4655953464).

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

2146397616 is a wasteful number, since it uses less digits than its factorization.

2146397616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16766 (or 16745 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 2146397616 is about 46329.2306864683. The cubic root of 2146397616 is about 1289.9416306743.

The spelling of 2146397616 in words is "two billion, one hundred forty-six million, three hundred ninety-seven thousand, six hundred sixteen".