1545799680 has 192 divisors, whose sum is σ = 5495817600. Its totient is φ = 412139520.

The previous prime is 1545799669. The next prime is 1545799691. The reversal of 1545799680 is 869975451.

1545799680 is a `hidden beast` number, since 1 + 5 + 4 + 579 + 9 + 68 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1545799669) and next prime (1545799691).

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273685 + ... + 279275.

It is an arithmetic number, because the mean of its divisors is an integer number (28624050).

Almost surely, 2^1545799680 is an apocalyptic number.

1545799680 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 1545799680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2747908800).

1545799680 is an abundant number, since it is smaller than the sum of its proper divisors (3950017920).

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

1545799680 is an equidigital number, since it uses as much as digits as its factorization.

1545799680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5627 (or 5601 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The square root of 1545799680 is about 39316.6590645747. The cubic root of 1545799680 is about 1156.2482036300.

The spelling of 1545799680 in words is "one billion, five hundred forty-five million, seven hundred ninety-nine thousand, six hundred eighty".