2151740448 has 216 divisors, whose sum is σ = 7230066480. Its totient is φ = 601735680.

The previous prime is 2151740441. The next prime is 2151740449. The reversal of 2151740448 is 8440471512.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2151740441) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 533383 + ... + 537401.

It is an arithmetic number, because the mean of its divisors is an integer number (33472530).

Almost surely, 2^2151740448 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 2151740448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3615033240).

2151740448 is an abundant number, since it is smaller than the sum of its proper divisors (5078326032).

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

2151740448 is a wasteful number, since it uses less digits than its factorization.

2151740448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4072 (or 4048 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 2151740448 is about 46386.8564142905. The cubic root of 2151740448 is about 1291.0110552103.

The spelling of 2151740448 in words is "two billion, one hundred fifty-one million, seven hundred forty thousand, four hundred forty-eight".