1230749688 has 128 divisors (see below), whose sum is σ = 3682713600. Its totient is φ = 335127936.

The previous prime is 1230749671. The next prime is 1230749699. The reversal of 1230749688 is 8869470321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1711393 + ... + 1712111.

It is an arithmetic number, because the mean of its divisors is an integer number (28771200).

Almost surely, 2^1230749688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1230749688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1841356800).

1230749688 is an abundant number, since it is smaller than the sum of its proper divisors (2451963912).

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

1230749688 is a wasteful number, since it uses less digits than its factorization.

1230749688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201 (or 1197 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 1230749688 is about 35082.0422438603. The cubic root of 1230749688 is about 1071.6589075022.

The spelling of 1230749688 in words is "one billion, two hundred thirty million, seven hundred forty-nine thousand, six hundred eighty-eight".