1915950 has 48 divisors (see below), whose sum is σ = 4861296. Its totient is φ = 499200.

The previous prime is 1915939. The next prime is 1915957. The reversal of 1915950 is 595191.

It is a Smith number, since the sum of its digits (30) 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 (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1915957) 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, 7830 + ... + 8070.

It is an arithmetic number, because the mean of its divisors is an integer number (101277).

2^1915950 is an apocalyptic number.

1915950 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 1915950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2430648).

1915950 is an abundant number, since it is smaller than the sum of its proper divisors (2945346).

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

1915950 is a wasteful number, since it uses less digits than its factorization.

1915950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 2025, while the sum is 30.

The square root of 1915950 is about 1384.1784567027. The cubic root of 1915950 is about 124.2018478051.

The spelling of 1915950 in words is "one million, nine hundred fifteen thousand, nine hundred fifty".