1001501004 has 192 divisors, whose sum is σ = 2890137600. Its totient is φ = 269398080.

The previous prime is 1001500961. The next prime is 1001501023. The reversal of 1001501004 is 4001051001.

It is a happy number.

It is a super-2 number, since 2×1001501004² = 2006008522026016032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5996929 + ... + 5997095.

It is an arithmetic number, because the mean of its divisors is an integer number (15052800).

Almost surely, 2^1001501004 is an apocalyptic number.

1001501004 is a gapful number since it is divisible by the number (14) 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 1001501004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1445068800).

1001501004 is an abundant number, since it is smaller than the sum of its proper divisors (1888636596).

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

1001501004 is a wasteful number, since it uses less digits than its factorization.

1001501004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 1001501004 is about 31646.5006596306. The cubic root of 1001501004 is about 1000.5000845404.

Adding to 1001501004 its reverse (4001051001), we get a palindrome (5002552005).

The spelling of 1001501004 in words is "one billion, one million, five hundred one thousand, four".