1651879872 has 224 divisors, whose sum is σ = 5135270400. Its totient is φ = 519653376.

The previous prime is 1651879811. The next prime is 1651879877. The reversal of 1651879872 is 2789781561.

1651879872 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1651879872² = 5457414223037472768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1651879877) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3536983 + ... + 3537449.

Almost surely, 2^1651879872 is an apocalyptic number.

1651879872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1651879872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2567635200).

1651879872 is an abundant number, since it is smaller than the sum of its proper divisors (3483390528).

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

1651879872 is a wasteful number, since it uses less digits than its factorization.

1651879872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600 (or 584 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 54.

The square root of 1651879872 is about 40643.3250608264. The cubic root of 1651879872 is about 1182.1143438560.

The spelling of 1651879872 in words is "one billion, six hundred fifty-one million, eight hundred seventy-nine thousand, eight hundred seventy-two".