1913842780 has 12 divisors (see below), whose sum is σ = 4019069880. Its totient is φ = 765537104.

The previous prime is 1913842771. The next prime is 1913842781. The reversal of 1913842780 is 872483191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913842781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47846050 + ... + 47846089.

It is an arithmetic number, because the mean of its divisors is an integer number (334922490).

Almost surely, 2^1913842780 is an apocalyptic number.

1913842780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1913842780 is an abundant number, since it is smaller than the sum of its proper divisors (2105227100).

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

1913842780 is a wasteful number, since it uses less digits than its factorization.

1913842780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95692148 (or 95692146 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 1913842780 is about 43747.4888422181. The cubic root of 1913842780 is about 1241.5629744697.

The spelling of 1913842780 in words is "one billion, nine hundred thirteen million, eight hundred forty-two thousand, seven hundred eighty".