1343195540 has 24 divisors (see below), whose sum is σ = 2824148040. Its totient is φ = 536623488.

The previous prime is 1343195509. The next prime is 1343195543. The reversal of 1343195540 is 455913431.

It can be written as a sum of positive squares in 4 ways, for example, as 3928324 + 1339267216 = 1982^2 + 36596^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1343195540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343195543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23927 + ... + 57086.

It is an arithmetic number, because the mean of its divisors is an integer number (117672835).

Almost surely, 2^1343195540 is an apocalyptic number.

1343195540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1343195540 is an abundant number, since it is smaller than the sum of its proper divisors (1480952500).

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

1343195540 is a wasteful number, since it uses less digits than its factorization.

1343195540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81851 (or 81849 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 1343195540 is about 36649.6321946074. The cubic root of 1343195540 is about 1103.3494436565.

The spelling of 1343195540 in words is "one billion, three hundred forty-three million, one hundred ninety-five thousand, five hundred forty".