1913890950 has 192 divisors, whose sum is σ = 5611783680. Its totient is φ = 478558080.

The previous prime is 1913890939. The next prime is 1913890967. The reversal of 1913890950 is 590983191.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its 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 = 1913890896 and 1913890905.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1645069 + ... + 1646231.

It is an arithmetic number, because the mean of its divisors is an integer number (29228040).

Almost surely, 2^1913890950 is an apocalyptic number.

1913890950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1913890950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2805891840).

1913890950 is an abundant number, since it is smaller than the sum of its proper divisors (3697892730).

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

1913890950 is a wasteful number, since it uses less digits than its factorization.

1913890950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260 (or 1249 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 45.

The square root of 1913890950 is about 43748.0393846399. The cubic root of 1913890950 is about 1241.5733907880.

The spelling of 1913890950 in words is "one billion, nine hundred thirteen million, eight hundred ninety thousand, nine hundred fifty".