1651265000 has 160 divisors (see below), whose sum is σ = 4824705600. Its totient is φ = 514560000.

The previous prime is 1651264949. The next prime is 1651265023. The reversal of 1651265000 is 5621561.

It is a super-2 number, since 2×1651265000² = 5453352200450000000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 382856 + ... + 387144.

It is an arithmetic number, because the mean of its divisors is an integer number (30154410).

Almost surely, 2^1651265000 is an apocalyptic number.

1651265000 is a gapful number since it is divisible by the number (10) 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 1651265000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2412352800).

1651265000 is an abundant number, since it is smaller than the sum of its proper divisors (3173440600).

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

1651265000 is a wasteful number, since it uses less digits than its factorization.

1651265000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4333 (or 4314 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1651265000 is about 40635.7601134764. The cubic root of 1651265000 is about 1181.9676545747.

Adding to 1651265000 its reverse (5621561), we get a palindrome (1656886561).

The spelling of 1651265000 in words is "one billion, six hundred fifty-one million, two hundred sixty-five thousand".