1313794540 has 24 divisors (see below), whose sum is σ = 2854106640. Its totient is φ = 507396288.

The previous prime is 1313794519. The next prime is 1313794543. The reversal of 1313794540 is 454973131.

It is a self number, because there is not a number n which added to its sum of digits gives 1313794540.

It is not an unprimeable number, because it can be changed into a prime (1313794543) 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, 1132002 + ... + 1133161.

It is an arithmetic number, because the mean of its divisors is an integer number (118921110).

Almost surely, 2^1313794540 is an apocalyptic number.

1313794540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1313794540 is an abundant number, since it is smaller than the sum of its proper divisors (1540312100).

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

1313794540 is a wasteful number, since it uses less digits than its factorization.

1313794540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2265201 (or 2265199 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 1313794540 is about 36246.3038115613. The cubic root of 1313794540 is about 1095.2396325762.

The spelling of 1313794540 in words is "one billion, three hundred thirteen million, seven hundred ninety-four thousand, five hundred forty".