1538074980 has 240 divisors, whose sum is σ = 5236492800. Its totient is φ = 375674112.

The previous prime is 1538074973. The next prime is 1538074991. The reversal of 1538074980 is 894708351.

1538074980 is a `hidden beast` number, since 153 + 8 + 0 + 7 + 498 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4190757 + ... + 4191123.

It is an arithmetic number, because the mean of its divisors is an integer number (21818720).

Almost surely, 2^1538074980 is an apocalyptic number.

1538074980 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 1538074980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2618246400).

1538074980 is an abundant number, since it is smaller than the sum of its proper divisors (3698417820).

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

1538074980 is a wasteful number, since it uses less digits than its factorization.

1538074980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600 (or 589 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 1538074980 is about 39218.2990452161. The cubic root of 1538074980 is about 1154.3189778501.

The spelling of 1538074980 in words is "one billion, five hundred thirty-eight million, seventy-four thousand, nine hundred eighty".