1913534540 has 12 divisors (see below), whose sum is σ = 4018422576. Its totient is φ = 765413808.

The previous prime is 1913534533. The next prime is 1913534599. The reversal of 1913534540 is 454353191.

It is a super-2 number, since 2×1913534540² = 7323228871546023200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1913534540.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47838344 + ... + 47838383.

It is an arithmetic number, because the mean of its divisors is an integer number (334868548).

Almost surely, 2^1913534540 is an apocalyptic number.

1913534540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1913534540 is an abundant number, since it is smaller than the sum of its proper divisors (2104888036).

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

1913534540 is a wasteful number, since it uses less digits than its factorization.

1913534540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95676736 (or 95676734 counting only the distinct ones).

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

The square root of 1913534540 is about 43743.9657552902. The cubic root of 1913534540 is about 1241.4963162742.

The spelling of 1913534540 in words is "one billion, nine hundred thirteen million, five hundred thirty-four thousand, five hundred forty".