1001651420 has 96 divisors (see below), whose sum is σ = 2693537280. Its totient is φ = 303747840.

The previous prime is 1001651419. The next prime is 1001651461. The reversal of 1001651420 is 241561001.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1001651392 and 1001651401.

It is a congruent number.

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, 48191 + ... + 65769.

It is an arithmetic number, because the mean of its divisors is an integer number (28057680).

Almost surely, 2^1001651420 is an apocalyptic number.

1001651420 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 1001651420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1346768640).

1001651420 is an abundant number, since it is smaller than the sum of its proper divisors (1691885860).

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

1001651420 is a wasteful number, since it uses less digits than its factorization.

1001651420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17643 (or 17641 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1001651420 is about 31648.8770732865. The cubic root of 1001651420 is about 1000.5501705901.

The spelling of 1001651420 in words is "one billion, one million, six hundred fifty-one thousand, four hundred twenty".