2151512436 has 48 divisors (see below), whose sum is σ = 5224544640. Its totient is φ = 688275840.

The previous prime is 2151512423. The next prime is 2151512453. The reversal of 2151512436 is 6342151512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39606 + ... + 76626.

It is an arithmetic number, because the mean of its divisors is an integer number (108844680).

Almost surely, 2^2151512436 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 2151512436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2612272320).

2151512436 is an abundant number, since it is smaller than the sum of its proper divisors (3073032204).

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

2151512436 is a wasteful number, since it uses less digits than its factorization.

2151512436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37224 (or 37222 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 2151512436 is about 46384.3986271246. The cubic root of 2151512436 is about 1290.9654523726.

Adding to 2151512436 its reverse (6342151512), we get a palindrome (8493663948).

The spelling of 2151512436 in words is "two billion, one hundred fifty-one million, five hundred twelve thousand, four hundred thirty-six".