1951964 has 36 divisors (see below), whose sum is σ = 4155984. Its totient is φ = 798336.

The previous prime is 1951951. The next prime is 1951967. The reversal of 1951964 is 4691591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1951967) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4292 + ... + 4724.

It is an arithmetic number, because the mean of its divisors is an integer number (115444).

2^1951964 is an apocalyptic number.

1951964 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 1951964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2077992).

1951964 is an abundant number, since it is smaller than the sum of its proper divisors (2204020).

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

1951964 is a wasteful number, since it uses less digits than its factorization.

1951964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474 (or 465 counting only the distinct ones).

The product of its digits is 9720, while the sum is 35.

The square root of 1951964 is about 1397.1270522039. The cubic root of 1951964 is about 124.9752270907.

The spelling of 1951964 in words is "one million, nine hundred fifty-one thousand, nine hundred sixty-four".