1913339904 has 240 divisors, whose sum is σ = 5989283328. Its totient is φ = 532021248.

The previous prime is 1913339903. The next prime is 1913339921. The reversal of 1913339904 is 4099333191.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913339903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23052247 + ... + 23052329.

Almost surely, 2^1913339904 is an apocalyptic number.

1913339904 is a gapful number since it is divisible by the number (14) 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 1913339904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2994641664).

1913339904 is an abundant number, since it is smaller than the sum of its proper divisors (4075943424).

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

1913339904 is an frugal number, since it uses more digits than its factorization.

1913339904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 42.

The square root of 1913339904 is about 43741.7409804411. The cubic root of 1913339904 is about 1241.4542217339.

The spelling of 1913339904 in words is "one billion, nine hundred thirteen million, three hundred thirty-nine thousand, nine hundred four".