1551679488 has 180 divisors, whose sum is σ = 4753836360. Its totient is φ = 486014976.

The previous prime is 1551679483. The next prime is 1551679499. The reversal of 1551679488 is 8849761551.

It is a happy number.

1551679488 is a `hidden beast` number, since 1 + 551 + 6 + 7 + 9 + 4 + 88 = 666.

It is not an unprimeable number, because it can be changed into a prime (1551679483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2506443 + ... + 2507061.

It is an arithmetic number, because the mean of its divisors is an integer number (26410202).

Almost surely, 2^1551679488 is an apocalyptic number.

1551679488 is a gapful number since it is divisible by the number (18) 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 1551679488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2376918180).

1551679488 is an abundant number, since it is smaller than the sum of its proper divisors (3202156872).

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

1551679488 is an equidigital number, since it uses as much as digits as its factorization.

1551679488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 641 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 54.

The square root of 1551679488 is about 39391.3631142666. The cubic root of 1551679488 is about 1157.7123682696.

The spelling of 1551679488 in words is "one billion, five hundred fifty-one million, six hundred seventy-nine thousand, four hundred eighty-eight".