1917930364 has 18 divisors (see below), whose sum is σ = 3904358640. Its totient is φ = 821970072.

The previous prime is 1917930353. The next prime is 1917930367. The reversal of 1917930364 is 4630397191.

It is a self number, because there is not a number n which added to its sum of digits gives 1917930364.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1917930367) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4892484 + ... + 4892875.

Almost surely, 2^1917930364 is an apocalyptic number.

1917930364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1917930364 is an abundant number, since it is smaller than the sum of its proper divisors (1986428276).

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

1917930364 is a wasteful number, since it uses less digits than its factorization.

1917930364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9785377 (or 9785368 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 1917930364 is about 43794.1818510176. The cubic root of 1917930364 is about 1242.4462556929.

The spelling of 1917930364 in words is "one billion, nine hundred seventeen million, nine hundred thirty thousand, three hundred sixty-four".