1488873640 has 32 divisors (see below), whose sum is σ = 3361425480. Its totient is φ = 593512192.

The previous prime is 1488873593. The next prime is 1488873643. The reversal of 1488873640 is 463788841.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1293265444 + 195608196 = 35962^2 + 13986^2 .

It is not an unprimeable number, because it can be changed into a prime (1488873643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51799 + ... + 75238.

Almost surely, 2^1488873640 is an apocalyptic number.

1488873640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1488873640 is an abundant number, since it is smaller than the sum of its proper divisors (1872551840).

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

1488873640 is a wasteful number, since it uses less digits than its factorization.

1488873640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127341 (or 127337 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 49.

The square root of 1488873640 is about 38585.9254132903. The cubic root of 1488873640 is about 1141.8768815553.

It can be divided in two parts, 148 and 8873640, that added together give a palindrome (8873788).

The spelling of 1488873640 in words is "one billion, four hundred eighty-eight million, eight hundred seventy-three thousand, six hundred forty".