1913343900 has 144 divisors (see below), whose sum is σ = 6010281984. Its totient is φ = 467147520.

The previous prime is 1913343869. The next prime is 1913343917. The reversal of 1913343900 is 93433191.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 493369 + ... + 497231.

Almost surely, 2^1913343900 is an apocalyptic number.

1913343900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1913343900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3005140992).

1913343900 is an abundant number, since it is smaller than the sum of its proper divisors (4096938084).

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

1913343900 is a wasteful number, since it uses less digits than its factorization.

1913343900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4020 (or 4013 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 1913343900 is about 43741.7866576115. The cubic root of 1913343900 is about 1241.4550859901.

The spelling of 1913343900 in words is "one billion, nine hundred thirteen million, three hundred forty-three thousand, nine hundred".