1156489680 has 320 divisors, whose sum is σ = 3934033920. Its totient is φ = 280270848.

The previous prime is 1156489679. The next prime is 1156489699. The reversal of 1156489680 is 869846511.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17261007 + ... + 17261073.

It is an arithmetic number, because the mean of its divisors is an integer number (12293856).

Almost surely, 2^1156489680 is an apocalyptic number.

1156489680 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 1156489680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1967016960).

1156489680 is an abundant number, since it is smaller than the sum of its proper divisors (2777544240).

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

1156489680 is a wasteful number, since it uses less digits than its factorization.

1156489680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 48.

The square root of 1156489680 is about 34007.2004140300. The cubic root of 1156489680 is about 1049.6566314889.

The spelling of 1156489680 in words is "one billion, one hundred fifty-six million, four hundred eighty-nine thousand, six hundred eighty".