1913866650 has 48 divisors (see below), whose sum is σ = 5273769600. Its totient is φ = 510364080.

The previous prime is 1913866631. The next prime is 1913866651. The reversal of 1913866650 is 566683191.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 1913866596 and 1913866605.

It is not an unprimeable number, because it can be changed into a prime (1913866651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 707490 + ... + 710189.

It is an arithmetic number, because the mean of its divisors is an integer number (109870200).

Almost surely, 2^1913866650 is an apocalyptic number.

1913866650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1913866650 is an abundant number, since it is smaller than the sum of its proper divisors (3359902950).

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

1913866650 is a wasteful number, since it uses less digits than its factorization.

1913866650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417700 (or 1417689 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 1913866650 is about 43747.7616570265. The cubic root of 1913866650 is about 1241.5681361590.

The spelling of 1913866650 in words is "one billion, nine hundred thirteen million, eight hundred sixty-six thousand, six hundred fifty".