1651004740 has 96 divisors (see below), whose sum is σ = 4348318464. Its totient is φ = 511541760.

The previous prime is 1651004731. The next prime is 1651004777. The reversal of 1651004740 is 474001561.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 1651004699 and 1651004708.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 263322 + ... + 269518.

It is an arithmetic number, because the mean of its divisors is an integer number (45294984).

Almost surely, 2^1651004740 is an apocalyptic number.

1651004740 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 1651004740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2174159232).

1651004740 is an abundant number, since it is smaller than the sum of its proper divisors (2697313724).

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

1651004740 is a wasteful number, since it uses less digits than its factorization.

1651004740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6397 (or 6395 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1651004740 is about 40632.5576354726. The cubic root of 1651004740 is about 1181.9055536875.

The spelling of 1651004740 in words is "one billion, six hundred fifty-one million, four thousand, seven hundred forty".