1344861500 has 144 divisors (see below), whose sum is σ = 3210296544. Its totient is φ = 491776000.

The previous prime is 1344861491. The next prime is 1344861509. The reversal of 1344861500 is 51684431.

It is an interprime number because it is at equal distance from previous prime (1344861491) and next prime (1344861509).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1344861509) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5924387 + ... + 5924613.

It is an arithmetic number, because the mean of its divisors is an integer number (22293726).

Almost surely, 2^1344861500 is an apocalyptic number.

1344861500 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 1344861500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1605148272).

1344861500 is an abundant number, since it is smaller than the sum of its proper divisors (1865435044).

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

1344861500 is a wasteful number, since it uses less digits than its factorization.

1344861500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 1344861500 is about 36672.3533469015. The cubic root of 1344861500 is about 1103.8054151472.

The spelling of 1344861500 in words is "one billion, three hundred forty-four million, eight hundred sixty-one thousand, five hundred".