1913605420 has 24 divisors (see below), whose sum is σ = 4037625648. Its totient is φ = 761812800.

The previous prime is 1913605403. The next prime is 1913605481. The reversal of 1913605420 is 245063191.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222511 + ... + 230950.

It is an arithmetic number, because the mean of its divisors is an integer number (168234402).

Almost surely, 2^1913605420 is an apocalyptic number.

1913605420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1913605420 is an abundant number, since it is smaller than the sum of its proper divisors (2124020228).

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

1913605420 is a wasteful number, since it uses less digits than its factorization.

1913605420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453681 (or 453679 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 1913605420 is about 43744.7759166738. The cubic root of 1913605420 is about 1241.5116450059.

The spelling of 1913605420 in words is "one billion, nine hundred thirteen million, six hundred five thousand, four hundred twenty".