1651268672 has 56 divisors (see below), whose sum is σ = 3371721984. Its totient is φ = 801969152.

The previous prime is 1651268657. The next prime is 1651268683. The reversal of 1651268672 is 2768621561.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 410093 + ... + 414099.

Almost surely, 2^1651268672 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 1651268672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1685860992).

1651268672 is an abundant number, since it is smaller than the sum of its proper divisors (1720453312).

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

1651268672 is a wasteful number, since it uses less digits than its factorization.

1651268672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4203 (or 4193 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 1651268672 is about 40635.8052953304. The cubic root of 1651268672 is about 1181.9685307075.

It can be divided in two parts, 16512 and 68672, that added together give a cube (85184 = 44³).

The spelling of 1651268672 in words is "one billion, six hundred fifty-one million, two hundred sixty-eight thousand, six hundred seventy-two".