2151345450 has 96 divisors (see below), whose sum is σ = 5421742272. Its totient is φ = 564480000.

The previous prime is 2151345437. The next prime is 2151345467. The reversal of 2151345450 is 545431512.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3196314 + ... + 3196986.

It is an arithmetic number, because the mean of its divisors is an integer number (56476482).

Almost surely, 2^2151345450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2151345450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2710871136).

2151345450 is an abundant number, since it is smaller than the sum of its proper divisors (3270396822).

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

2151345450 is a wasteful number, since it uses less digits than its factorization.

2151345450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000 (or 995 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 2151345450 is about 46382.5985688599. The cubic root of 2151345450 is about 1290.9320528082.

Adding to 2151345450 its reverse (545431512), we get a palindrome (2696776962).

The spelling of 2151345450 in words is "two billion, one hundred fifty-one million, three hundred forty-five thousand, four hundred fifty".