1913742540 has 36 divisors (see below), whose sum is σ = 5805019584. Its totient is φ = 510331296.

The previous prime is 1913742511. The next prime is 1913742583. The reversal of 1913742540 is 452473191.

1913742540 is a `hidden beast` number, since 191 + 3 + 7 + 425 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1913742495 and 1913742504.

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 11 ways as a sum of consecutive naturals, for example, 5315772 + ... + 5316131.

It is an arithmetic number, because the mean of its divisors is an integer number (161250544).

Almost surely, 2^1913742540 is an apocalyptic number.

1913742540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1913742540 is an abundant number, since it is smaller than the sum of its proper divisors (3891277044).

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

1913742540 is a wasteful number, since it uses less digits than its factorization.

1913742540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10631918 (or 10631913 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 1913742540 is about 43746.3431614575. The cubic root of 1913742540 is about 1241.5412979338.

The spelling of 1913742540 in words is "one billion, nine hundred thirteen million, seven hundred forty-two thousand, five hundred forty".