1509498481920 has 432 divisors, whose sum is σ = 5694932722752. Its totient is φ = 337788272640.

The previous prime is 1509498481891. The next prime is 1509498481921. The reversal of 1509498481920 is 291848949051.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1509498481921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7032832 + ... + 7244288.

It is an arithmetic number, because the mean of its divisors is an integer number (13182714636).

Almost surely, 2^{1509498481920} is an apocalyptic number.

1509498481920 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 1509498481920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2847466361376).

1509498481920 is an abundant number, since it is smaller than the sum of its proper divisors (4185434240832).

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

1509498481920 is a wasteful number, since it uses less digits than its factorization.

1509498481920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211518 (or 211491 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 60.

The spelling of 1509498481920 in words is "one trillion, five hundred nine billion, four hundred ninety-eight million, four hundred eighty-one thousand, nine hundred twenty".