1547486980 has 48 divisors (see below), whose sum is σ = 3620398320. Its totient is φ = 551674368.

The previous prime is 1547486971. The next prime is 1547486981. The reversal of 1547486980 is 896847451.

It can be written as a sum of positive squares in 8 ways, for example, as 154107396 + 1393379584 = 12414^2 + 37328^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (1547486981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95079 + ... + 110158.

It is an arithmetic number, because the mean of its divisors is an integer number (75424965).

Almost surely, 2^1547486980 is an apocalyptic number.

1547486980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1547486980 is an abundant number, since it is smaller than the sum of its proper divisors (2072911340).

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

1547486980 is a wasteful number, since it uses less digits than its factorization.

1547486980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205288 (or 205286 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 52.

The square root of 1547486980 is about 39338.1110375168. Note that the first 3 decimals coincide. The cubic root of 1547486980 is about 1156.6687471645.

The spelling of 1547486980 in words is "one billion, five hundred forty-seven million, four hundred eighty-six thousand, nine hundred eighty".