1348667730 has 96 divisors (see below), whose sum is σ = 3574724400. Its totient is φ = 352720896.

The previous prime is 1348667729. The next prime is 1348667731. The reversal of 1348667730 is 377668431.

It is an interprime number because it is at equal distance from previous prime (1348667729) and next prime (1348667731).

It can be written as a sum of positive squares in 8 ways, for example, as 864183609 + 484484121 = 29397^2 + 22011^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1348667731) 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 47 ways as a sum of consecutive naturals, for example, 1096756 + ... + 1097984.

Almost surely, 2^1348667730 is an apocalyptic number.

1348667730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1348667730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1787362200).

1348667730 is an abundant number, since it is smaller than the sum of its proper divisors (2226056670).

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

1348667730 is a wasteful number, since it uses less digits than its factorization.

1348667730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468 (or 1465 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The square root of 1348667730 is about 36724.2117682599. The cubic root of 1348667730 is about 1104.8457651414.

The spelling of 1348667730 in words is "one billion, three hundred forty-eight million, six hundred sixty-seven thousand, seven hundred thirty".