1951938 has 20 divisors (see below), whose sum is σ = 4374150. Its totient is φ = 650592.

The previous prime is 1951891. The next prime is 1951949. The reversal of 1951938 is 8391591.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1520289 + 431649 = 1233^2 + 657^2 .

It is an Ulam number.

It is a Curzon number.

It is a plaindrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5863 + ... + 6186.

2^1951938 is an apocalyptic number.

1951938 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1951938 is an abundant number, since it is smaller than the sum of its proper divisors (2422212).

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

1951938 is a wasteful number, since it uses less digits than its factorization.

1951938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12063 (or 12054 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The square root of 1951938 is about 1397.1177473642. The cubic root of 1951938 is about 124.9746722017.

The spelling of 1951938 in words is "one million, nine hundred fifty-one thousand, nine hundred thirty-eight".