1913918725 has 12 divisors (see below), whose sum is σ = 2423755584. Its totient is φ = 1498556720.

The previous prime is 1913918723. The next prime is 1913918749. The reversal of 1913918725 is 5278193191.

It is not a de Polignac number, because 1913918725 - 2¹ = 1913918723 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913918723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 813259 + ... + 815608.

It is an arithmetic number, because the mean of its divisors is an integer number (201979632).

Almost surely, 2^1913918725 is an apocalyptic number.

It is an amenable number.

1913918725 is a deficient number, since it is larger than the sum of its proper divisors (509836859).

1913918725 is a wasteful number, since it uses less digits than its factorization.

1913918725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628924 (or 1628919 counting only the distinct ones).

The product of its digits is 136080, while the sum is 46.

The square root of 1913918725 is about 43748.3568262855. The cubic root of 1913918725 is about 1241.5793967962.

The spelling of 1913918725 in words is "one billion, nine hundred thirteen million, nine hundred eighteen thousand, seven hundred twenty-five".